However I don't think playing minecraft is the best to see if the hard drive is working. Cause the game is already loaded on the RAM. Interesting video none the less.
The world save file is probably not fully loaded in ram... And there are probably other things that is not loaded in ram and will stop working If the bed is not working...
You're right, I should have actually transferred a large file like someone else said in this comment section. But I know it is still accessing the disk constantly and I didn't have anything else on this computer.
In Minecraft closeby world chunks are loaded to RAM when world is opened. One should move few chunks to some direction in the world to make Minecraft to load more chunks from hard disk. @@misaalanshori
@@kepa219 that's what I thought too after realizing he's not moving the character, but there's probably _something_ that's not loaded into ram.... Right?
Windows itself would hang up if the hdd does not respond, minecraft would be just a indicator of the usability of the machine. And as shown when it dies, minecraft died too, no matter if its cached on ram, because it depends on the OS itself, and actually world generation writes and reads data from the hdd a good part of the time anyway.
the game limits itself to 1gb of ram that it can use, (you can see that as a preset in the launcher) the game itself is actually a little bit larger, While maybe not the best game to try possibly not the worst
It actually has to do with the HDD platters being made out of Aluminium and spinning at high speed in the magnets magnetic field, if you do a search for magnetic field effect with Aluminium, you will find a lot of videos and research on it. the basics though is while aluminium is not magnetic, it does interact with the magnetic field of a magnet and will act as a brake for a spinning disk of aluminium or if you just try to slide a magnet down a sheet of aluminium at a steep angle.
@@byte6d653 no it was just the fysical shock from the magnet hitting the hdd. A hit with a stone would have had that same effect. The readhead on the arm skips some tracks and the hdd has to find his track and required speed for it again and thats all of the delay, all thats seen here.
Modern HDDs have magnetic domains on the platter that are too small and powerfully magnetized to affect with typical permanent magnets. If you are looking to destroy the data in a way such that it positively cannot be recovered, you need to physically destroy the platters. Thermite works well for this purpose, but just putting the drive in an oven that can exceed the curie point of the media will do quite the number on the magnetic domains on the disc (even if the drive remains otherwise intact). SSDs, being more-or-less immune to static magnetic fields, would require thermite to totally destroy.
That's exactly what I learned here, thanks for the info. The funny thing is that before I did this video I went to the computer store to buy an SSD, I told one of the associates that help me that I had a magnet to close to my hard drive, just messing around, they all jump and said oh my God your data is going to be destroyed you need to be very careful. it was at that moment I knew making this video was a good idea...LBVS
UselessDood - if you really want the data GONE, that won’t work: the platters can be transplanted into another mechanism and read. Granted, this isn’t a threat scenario for most people; but if you have nation-state level adversaries... 🤔
@@darkwinter6028 that's interesting, I'm working on a how to video where I show how to remove the platters and put them into a new drive to recover data. I always knew that was possible but have never seen it done.
Well according to the label on the hard drive, the warranty is void if the hard drive experiences impact shock of more than 350 G's , I highly doubt not a magnet hitting the drive will exceed 350 g's of shock. I'm not going against what you said but that's what the label says on the drive.
The strong magnet was likely just preventing the read head from properly moving across the platters surface and didn't effect the polarity of stored data. Now a powerful electromagnet on the other hand could invert some bits of data.
Naw it slowed down and would eventually stop because it's triggering sensors used for fall detection. ThioJoe did a video where he was shaking hard drives in use and it exhibits the same behavior of freezing and queuing up requests for when it detects everything is fine again.
@@ConcernedCitizenPPCA as far as what I know, when fall detection sensors are triggered then the read write head would move away from the disk and park itself. But in the video it didn't.
Lenz's Law. Though the Aluminum platters don't attract the magnet on their own, the magnet induces a magnetic field in the platter, attracting the magnet and creating resistance (slowing the platter). Similar to how if you drop a strong magnet through an aluminum tube, it floats slowly through on it's way down. I guess the harddrive senses the slowdown and pauses activity until the motor can spin it back up to normal speed.
@@WarpedYTMy quick search earlier said that most desktop use Aluminum and smaller drives for laptops are glass. I guess it just depends on the manufacturer and quality of the drive. I'm guessing the glass ones wouldn't slow down much.
@@WarpedYT Silicon in a disk shape is typically used as wafers for semiconductor-based integrated circuits, including CPU/GPU dies and memory chips among other things. These get manufactured through lithography and cut to size before being packaged, conditioned and sent to users of those chips (like RAM stick manufacturers.) That's why there's no need to use silicon for a platter that's not used as a base for semiconductor technology. The platters are coated with a magnetic film, so it can be pretty much anything that retains this coat at high rotation speed and isn't magnetic. Aluminum can fit the bill.
HDDs work via magnetic coating on a ceramic or glass disk, you would need around 140 pounds of force to magnetically erase one. SSDs work via chips that hold electrical charge, a magnet isn't going to do anything unless you're using it to smash the drive, the best way to kill an SSD would be to remove the charge or overload it.
6:24 the reason for the disks slowing down is because the magnet induces currents inside the disks (only possible when spinning) and those currents create opposing magnetic fields slowing down the disks. if it were the actuator arm getting attracted to the disks it would have destroyed itself in a second (head crash)
all the magnetic field is for is controlling the read/write apparatus. it works much like a speaker's voice coil. all you are doing is interfering. also the enclosure is shielded, that's why no effect until you bring a really strong magnet.
Okay, that was unexpected. When I was in the Military, we used to destroy drives with a box that you put the drive in and then it zapped them with an EMP. That was military grade.
@@freedustin You might speak a different version of English, but Microwaves are a form of Electromagnetic radiation. The machine we used was definitely an EMP generator. Took about 10 seconds per drive. You could fry just about any magnetic media with it. Floppies, VHS Tapes, cassettes, etc. What is your definition of a Degausser? Does it generate an magnetic field with electromagnets for a short period of time? One might say a 'pulse' of the electromagnetic type? An EMP? Either way, you're wrong. Fuck off.
I just subscribed. I always wondered about the same thing if a magnet would affect it but I never would ever attempt to do what she did. Awesome video buddy. Keith
4:00 You just killed the disk by impact not from the magnetic field. The metal in which the disk is encased is a type of metal that reflects magnetic fields, nothing magnetic can get through it (I don't remember the name of the metal now). But if you hit the disk while it's operating, 1G could easly misalign the heads and you will have that behaviour. The previous hit also made some damage and thats why you saw a little increment in disk usage. On the other hand, the disk usage meter doesn't measure usage, just amount of pending read/write operations. When you hit it the previous time it probably lost some RPMs and resetted the heads position and maybe some damage went into the disk itself so R/W was slower. Last hit could make the heads hit he disk, slowing it down or scratch the plates hardly. Some disks, when the RPMs drop just stop for protection. I hope you didn't make the recovery into the same disk xD
6:20 The stopping happens because eddy currents are generated on the moving metal that oppose the magnetic field. That's what some exercese bikes use to slow the pedals. No friction brakes. Same principle behind magnetic brakes.
Same. Killed a 2010 MacBook Pro with a neodymium magnet. Much smaller that the one in this video. The computer refused to reboot and the hard drive made a clicking sound afterwards.
ah its refreshing to see someone that doesnt try to dramatise everything and fill the video up with unnecessary junk. but rather just do what they set out to do and accept whatever outcome there is. you have my respect and a new sub.
8:56 Do you see that half circle mechanism directly behind the read/write arm? There’s actually 2 of them (top and bottom) and they each contain an AWESOME rare earth magnet which powers the arm’s movement as well as provides magnetic force for the actual reading and writing to the platter(s). I’ve taken *A TON* of of them apart to salvage these incredible magnets out of them (my wife’s company regularly has to destroy many of them as they outdate and contain sensitive info....I keep a STACK of these magnets for fun and projects. Your powerful magnet is disrupting the control of the arm and read/write head at it’s other end by disrupting the magnetic field which “tells” the HDD controller WHERE the arm is....effectively blinding the controller. No disruption of data occurred.....or the computer would no longer boot or function correctly (known as corrupted sectors on the drive).
This is crazy, I put a horseshoe magnet on a hard disk back around 2005 (it was already an old drive then probably from around 1998) and it erased it completely. There was nothing left of any file on there. They managed to proof a harddrive against that 🤔
Cool test. Though i have some comments: 1: Minecraft isn't ideal to test hard drive function. It will crash if you destroy data, but not instantly. Since the actually used data will be in RAM, destroying data on the hard drive will only cause problems randomly delayed. 2: The moment the system crashed may be caused by the impact and therefore fast movement of the drive. Especially since it ran normally again after a restart. But data may still have been damaged, that's impossible to know without scanning it all. 3: The magnet slowing down the platter spinning is very interesting! I would guess this happens because of the strong magnetic field disrupting the ones inside the electromotor driving the platters. Very cool footage i have never seen before!
Yeah I saw this coming, thankfully modern HDDs are pretty durable cause I once set a 100lb strength rare-earth magnet right on top of my laptop's HDD without thinking and it locked to the metal laptop surface and I heard the drive making a very distressed sound, but after I quickly pulled it off everything was fine and I got another year out of the drive before it started acting up (which may have just been age).
This is what I was interested in finding out. Someone pointed out that a transfer of data would've been more effective for a demonstration and that's true but ... the fact is Minecraft was installed on the HDD as everything else I imagine and there was no data loss, which is the part I was interested to discover. I'm not sure if a powerful enough magnet would corrupt or erase data beyond recovery, I think that if the magnet is capable of flipping the data blocks and remagnetize them, everything will be gone forever. Although it is encouraging that it would take a powerful magnet and even then, all that caused was the platters to slow down and it resumed functioning after that, with all the data still intact. I have a few drives that were manufactured 10+ years ago, so I don't know how differently they would handle this same test. Good to know that newer HDDs are, among other things, more resilient to magnetism. Nice test!
My guess is that the magnet merely held the read/write head in place, preventing it from moving, without changing any of the data. The computer acted wonky because the hard drive suddenly disappeared.
I didn't even need to finish this video to know the answer of the title, I once dropped a very high powered magnet on my computer and it instantly blue screened
There's one more magnet you should try. It's called a bulk eraser, and we use them in commercial radio and television to erase an entire cart, or open reel. I think it sends an alternating polarity through the media. Should work on an HDD. Pretty sure any magnet placed directly under a CPU will disrupt it's operation, too. Caught a wild tech doing that to one of my client's PC when I was in the service field, back in the 90s.
The reason why it did stop working until you removed the magnet is because when the platter is stopped, the head does normally touch it, so to avoid damage, if the speed of the platter is under the nominal speed of the disk, the head gets parked for safety. The only thing that makes it float is the air moved by the platter itself, which is the reason there isn't vaccum drives yet, but instead of that helium sealed drives do exist to increase the data density by stabilizing the air currents inside and making a tighter fit between heads and platters.
It's really cool that you took the time to try some of this, but really what you're demonstrating is interfering with how the disks operate; i.e- you stopped the drive from being able to physically spin and read/write normally, which is why the PC locked up then resumed again, rather than showing any kind of corruption. If you want to show corruption then the easiest way would be to fill the disk with large files, and generate checksums for these. After attempting to corrupt the disk, you can then generate the checksums again to see if they changed, which would indicate corruption. Admittedly not as amusing to watch though 😉
I really got to give you props for putting the things to practice rather than doing a whole investigation to theorize what might happen and then put it to practice. Which could get a lot of backlash from the elitists who already knew that or found out what would happen by doing some simple research beforehand and feel the need to point out that the result was obvious and also props to those who know about them and respectfully explain the reasons to share the knowledge. I guess the simplicity of doing to know what will happen appeals me more than knowing what'll happen and put to practice.
Funny that you say that, a lot of things that I do sometimes I start researching them, just out of curiosity, I spend a lot of time researching and sometimes I think to myself, "can't we just do it and see what happens" I'm not even going to pretend like I thought nothing was going to happen oh, I thought the drive would be toast, so did every computer guy I talked to. Now I reached back out to those people and told them what happened, sent them the video, they are totally confused... These are IT guys I'm talking about.lol
@@WarpedYT Lol, that sounds really cool, funny how you taught your friends something new too! And thanks to you for the content as well man, keep up the good work man :D
Very instructive, I know you always had to be very careful with floppy disks in the old days but I've never heard of a hard drive being damaged by an external magnet - what probably happened with your neodymium block magnet is that it disrupted the mechanical movement either of the platters or the head temporarily, creating the symptoms you saw, but did nothing to the magnetic data on the disk.
The reason is because modern hdds have a feature where if the drive is shaken, or comes in contact with a magnetic field, the drive will stop reading and writing, and Windows will set up a queue of processes when the drive is ready to read again. That is why all of the programs opened when he pulled the magnet away.
yeah- i'd say the magnet may not affect the data but certainly messed with the motor as seen when it slowed down while open. Electric motors are based on magnetism.
The reason the magnet slowed the hard disk has nothing to do with the pull. The disk substrate is aluminum, which is a good conductor. When there is on a strong magnetic field, current is generated in the disk, like in a generator. This acts to produce a drag on the disk, as if you pressed your hand against it, which is more then the motor can handle, so it slows. Removing the field eliminates the drag, and the disk works again. (Some drives use glass for the disk substrate, so those should not slow.) If you were successful in erasing the disk, it would become useless because in addition to the data, there are "clock tracks". (Some drives embed the tracks with the data, while others dedicate a single surface of the stack for this.) These are the "roads" upon which the data are written on an otherwise featureless surface. Erase those, and the drive becomes a piece of wall art. When the drive is newly-made, these are written in by placing the drive in a "million-dollar machine" at the factory. (Have you seen the jumpers labelled "factory use only, do not connect? That is set during the initialization.) You know that little curved hole on the drive with tape over it? That is open during this procedure so the machine "knows" where the heads are, to allow writing the "lane markers" onto the disk. That is done only once at manufacture.
Byte 6d65 no it was just the fysical shock from the magnet hitting the hdd. A hit with a stone would have had that same effect. The readhead on the arm skips some tracks and the hdd has to find his track and required speed for it again and thats all of the delay, all thats seen here. And indeed, there is a supetstrong neodyniummagnet half an inch beside the platter inside the cover. That cover that diverts the strong enough fieldlines to destroy data easally around the platter.
I agree - he should have turned off the computer so that the HDD heads would be off the platter or in a landing zone on the platter, then applied the magnet. Of course, the final result would be the same.
Well I did try the magnet on the platters themselves more toward the end of the video, I'm going to hook that hard drive up again and see if the data is okay. I'm pretty sure even the steel cover on the hard drive provides some sort of magnetic shielding.
When the HDD detects any kind of shock, it parks the read / write head until it detects that it's still again... It takes a few seconds until it read data again.
Modern hard drives have a protection system where if strong magnetic fields are detected it will shut down the hard disk to prevent further damage. That's why it did not work when the magnet was on the hard drive. When the magnet went away, it automatically resumed what it had to do and it opened all the programs.
Your more likely to break your drive by the impacts you were doing to it. You have to be careful with shocking it to make sure the test is not tainted. I know this because I've been working on them changing out heads to recover data from them.
What happened when you put the strongest magnet to the harddrive is the harddrive had a safety feature where if it feels a certain amount of gforce or movement, it'll completely stop reading and writing like you saw when you took the cover off and when you release it, it'll resume whatever you had in queue which is why a bunch of the applications you clicked opened up. With an SSD, it won't affect it at all because it's all electronic and not mechanical.
The strong magnet interfered with the spinning disk's motor's magnetic field. In order for the DC motor to work, it needs power in the windings that'll produce a magnetic field. But if you put a strong magnet near the center of the disk which is where the motor is located, your magnet's magnetic field will start cancelling the motor's magnetic field which if the motor's magnetic field and the magnet's magnetic field cancel each other to zero, the disk stops spinning completely. For more info just search for " how a DC motor works". As for the actuator, the reason why it stopped working is because it only starts reading the Plata after the disk reaches its maximum revolutions per minute (RPM) which can be either 5400rpm or 7200rpm depending on the manufacturer's design, otherwise the actuator arm will retract to its resting position which in this case the center of the Plata. Newer hard drives' actuator arms rest on a compartment outside the plata. At full speed, the Plata creates like an air barrier or cushion that prevents the actuator arm from scratching the Plata when it's accessing data on the Plata which when it does scratches the Plata will result in bad sectors or inaccessible data or permanently damaging the Plata or the hard drive's storage area.
The reason why the disk platter slows down is most probably due to a phenomenon called Eddy currents. It causes dampening by converting the kinetic energy to heat energy. Moving conductors of electricity in a magnetic field slow down due to small induced whirlpools of currents. Hard drives in fact use Eddy currents to control the reading pin. Since it is moving very fast, it is very easy to overshoot the sector you are trying to read. To avoid this, the backside of the pin us under magnetic field and eddy currents damp the quick acceleration to provide more accuracy.
but SSDs can have quicker data rot because they need an internal battery to keep your data when the drive is off, because SSDs use electrical charge to store data. This also means that if yhe internal battery dies then you basically can’t shut off the computer because the data will be lost extremely quickly. So for now I’m on team HDD.
Explaining what is seen with the open HDD, the disc is Aluminum, a conductor, and spinning it in a strong magnetic field turned the HDD into a really good eddy current brake. I built something similar for my stationary bike...3/8" aluminum disc 6 " in diameter soaks up all I can put out and barely gets warm!
That makes sense, because each of the magnetic regions on its own wouldn't really attract the magnet since they cancel each other out, but the disc as a whole has magnetism.. very interesting
@@WarpedYT Find yourself a very thick-walled aluminum tube and a ball or cube magnet that will easily fit thru it...as in able to just drop through by hand. Test to make sure the tube is aluminum by touching the tube in several places with the magnet...it should NOT stick. Now hold tube loosely by one end so it hangs vertical and drop the magnet in, letting it fall on something soft. It'll make you go "Hmmm"!
The reason why all those applications suddenly opened up was because you clicked the shortcuts to open the apps while the magnet was attached to the hdd, so they only opened why the magnet was taken off
A magnet physically blocks the transmissions of data in a computer, and youd need a pretty strong one to rip through a hard drive. Thats why you saw the computer start working again after you took it off, and while its definitely not a good idea it (probably) wont destroy the data burned into the hard drive (probably). The second air leaks in its dead tho. Remember that scene from indiana jones where the guy crumbled when exposed to air? Think of it like that
Also disks in a harddrive is covered with a protecting coating :) Which contributes to preservation. I read an article saying that in theory it would, but it requires a very strong magnet, that common people generally cant get a hold off :) If you wanna hide your porn collection from the world when you throw out hdd, drill a hole through it and dump it in water before tossing it, or seperate disks from hdd and drag a knife over all the layers. Also, you can take off the bios from the pcb board (curcuit on the back of the hard drive (just destroy all chips)) to make it near impossible for anyone to read. Since all hdd has specialized bios chips and it would therefor be very unlikely that people would be able to recover anything, even if they swapped the disks, due to incompatibility. For all those of you who came here to find out if you could dispose of it using magnets.
i know this is an old video but i think the reason it slows down with the magnet near it is probably because eddie currents are induced in the platter which in turn creates a magnetic field and opposes the spinning movement, similar to what happens with dropping a magnet down a (non magnetic) metallic pipe
The reason is because modern hdds have a feature where if the drive is shaken, or comes in contact with a magnetic field, the drive will stop reading and writing, and Windows will set up a queue of processes when the drive is ready to read again. That is why all of the programs opened when he pulled the magnet away.
To destroy your hard drive with a powerful magnet you need to create an oscillating strong magnetic field that will impart eddy currents. For a static field you will need a much bigger magnet. Take a taser and connect one lead to a home made copper wire coiled in 10 or so turns about 1.5 inch in diameter, and place other end of the wire couple of mm (or about 1/8 in) from the other taser end. (Do not let them touch) Technically you will be creating a MP that will end your hard drive and you computer. Disclaimer Keep your phone, peacemaker or other important device away from it. Do not do this at home. Do not recommend you or anyone doing this. This instructional intension only.
Lol... I was thinking about something like that or a magnetron focused through a proper funnel. just for the heck of it, but I want to do some slow motion stuff with hard drives, so I wrote a different type of episode coming up, something that will apply to everybody that has a computer. Thanks for the instructions for the awesome science project!, I may do some type of EMP generator of some sort, maybe in the future, right now I have a bunch of episodes to catch up on. Thanks for the feedback and thanks for watching
Some of the things that are slowing the disk are: The disruption of the motor magnetic field. And the interaction of the magnet and the aluminium disk. If you want more info on that watch this ua-cam.com/video/sENgdSF8ppA/v-deo.html (He is using cooper instead of aluminium but the way the react to magnets are the same)
I know someone who worked for the IRS and they used electromagnets to damage harddrives. They used electromagnetic wands that plugged into regular outlets that didn't totally erase the drives but corrupted the data to the point the disk couldn't be used again. He was told they used to have special rooms with electromagnets even more powerful to try and erase the data. Don't know if it's true. It's what he told me.
This was an interesting experience. Tho, to better test the mechanical hard drive disk, you should've tried copying a large file, a video file for instance, copy the file file from the hard drive to a thumb drive, so it should be reading data at around 120 MB/s, (to access the disk section in your task manager, go to the second tab, called Performance, then go to Disk). Also to note, the hard drive you have spins at either 7200 or 5400 RPM, so when you try and put the magnet on it, we should see speeds go down live. That'd be interesting. But great idea regardless, I honestly thought the powerful magnet would just screw up the hard drive and break it! Keep the cool ideas coming! :)
Your absolutely correct, I was a bit unprepared, that's exactly what I should have done, and what's crazy is I have the USB drive right there, but it was like 8:30 at night, we had just finished a 10-hour shoot with the see-through engine, I was beyond exhausted. but I actually have one more hard drive video I want to do, it's going to be a seriously extreme test and something that happens to people very often. I'm going to use your idea in that video. Thank you
the platter spinning down, to me seems like the magnet was interfering with the motor feedback winding. iirc the drives circuitry is looking at the actual real time speed of the platter and position of the arm, adding the magnet slowed the platter because the feedback data was not what it was expecting, attempting to correct platter speed and getting the data it wants (platter speed) to a range it accepts.
it works if the hard drive is not plugged in. Minecraft runs on ram it will load on the ram and shouldn't be effected except when saving but the system was running on the hard drive crashing windows when the magnet slowed the rpm of the disk drive down. try using an electomagnet or the drive not plugged in
Im surprised that the pc is still running and the powersupply is not dead. when looking at it 2 of the GPU's are connected with molex to pcie connectors. They are also somehow running considering that only the six pin is plugged in for the reference cards. im in disbelieve that it even works. You should probably get a better Powersupply or get rid of some cards since the mining craze is basically dead.
I had worn my starfleet communicator pin while playing on my 486 with windows 3.1 and dos 6.22. It messed it up big-time. Had to reformat and it never did work quite the same again. Glad they have improved things over the years.
Internally is magnets for the head actuator. These magnets are actually extremely strong rare Earth or neo magnets. But what would happen when adding a magnet is the head can no longer respond correctly because the magnetic field for the head has moved. Running a game and running Windows will run from memory while doing your tests, so this is why it will continue to run even with a magnet on it. But the impact and the shift on the head can cause the head to scrape the platter. It takes serious magnetic fields to pull the material on the platters. Now, a microwave will kill it extremely fast. But know you know why EM Pulses are not used as weapons for war, since it would only effect power, and it takes serious power to do any damage. We are inside massive magnetic fields all day, and things are built to withhold against magnetic fields large enough to be felt from the moon.
However I don't think playing minecraft is the best to see if the hard drive is working. Cause the game is already loaded on the RAM. Interesting video none the less.
The world save file is probably not fully loaded in ram... And there are probably other things that is not loaded in ram and will stop working If the bed is not working...
You're right, I should have actually transferred a large file like someone else said in this comment section. But I know it is still accessing the disk constantly and I didn't have anything else on this computer.
*HDD not bed... Autocorrect
In Minecraft closeby world chunks are loaded to RAM when world is opened. One should move few chunks to some direction in the world to make Minecraft to load more chunks from hard disk. @@misaalanshori
@@kepa219 that's what I thought too after realizing he's not moving the character, but there's probably _something_ that's not loaded into ram.... Right?
"minecraft, that should eat up some cpu" (9% CPU Usage)
that's because he's using the shitty Bedrock version that's meant for use on phones
Lmao
It was a bedrock editon it i's bad
Bedrock edition is better.
@@HaydenH lol nope
The strong magnet, dont kill the disk data, but this magnet is interfere for reading head i guess.
True that
Hdd have neodinium magnet it
Pistolero it kills everything
The magnet can move the position of the read write head, they only have around a few millimeters of space between them & the platter
the write head automatically close whenever it sense strong magnetic field that could collapse the plate and the head,Most HDD today have that ability
Copy files instead of playing Minecraft, it’s a tiny game it could all be cached in memory. Otherwise good experiment.
Windows itself would hang up if the hdd does not respond, minecraft would be just a indicator of the usability of the machine. And as shown when it dies, minecraft died too, no matter if its cached on ram, because it depends on the OS itself, and actually world generation writes and reads data from the hdd a good part of the time anyway.
the game limits itself to 1gb of ram that it can use, (you can see that as a preset in the launcher) the game itself is actually a little bit larger, While maybe not the best game to try possibly not the worst
@@stormy4752 i use 6gb ram for Minecraft
How small is it?
Yes, I'm an absolute degenerate peasant, gloss over that for a bit
Stormy he’s using bedrock, its meant for,phones and it’s bad
I think what happened with the strongest magnet is that it pulled the disks up towards itself, making reading and writing impossible.
It actually has to do with the HDD platters being made out of Aluminium and spinning at high speed in the magnets magnetic field, if you do a search for magnetic field effect with Aluminium, you will find a lot of videos and research on it. the basics though is while aluminium is not magnetic, it does interact with the magnetic field of a magnet and will act as a brake for a spinning disk of aluminium or if you just try to slide a magnet down a sheet of aluminium at a steep angle.
@@byte6d653 no it was just the fysical shock from the magnet hitting the hdd. A hit with a stone would have had that same effect. The readhead on the arm skips some tracks and the hdd has to find his track and required speed for it again and thats all of the delay, all thats seen here.
maksphoto78 no it just interfered with the reed switch that makes the drive spin at correct rpm
@@byte6d653 Eddy's current
@@byte6d653 I see, thanks. So the magnet stopped the discs spinning.
Pretty sure you're talking about the movie "The Core"
Yes, for the life of me I couldn't remember the name of the movie. That's the one
Same movie where the hacker got the guy unlimited long distance "for life" by blowing into a gum wrapper while on the phone.
Really, how did that work?. I'll have to look that up, I don't remember that part
@@WarpedYT oh yes lol ua-cam.com/video/A2ghcYF_R-0/v-deo.html
Haha I remember that phone part, I think he wrapped up the chewing gum wrapper and whistled into it...then was like you have unlimited phone calls lol
Modern HDDs have magnetic domains on the platter that are too small and powerfully magnetized to affect with typical permanent magnets. If you are looking to destroy the data in a way such that it positively cannot be recovered, you need to physically destroy the platters. Thermite works well for this purpose, but just putting the drive in an oven that can exceed the curie point of the media will do quite the number on the magnetic domains on the disc (even if the drive remains otherwise intact). SSDs, being more-or-less immune to static magnetic fields, would require thermite to totally destroy.
That's exactly what I learned here, thanks for the info. The funny thing is that before I did this video I went to the computer store to buy an SSD, I told one of the associates that help me that I had a magnet to close to my hard drive, just messing around, they all jump and said oh my God your data is going to be destroyed you need to be very careful. it was at that moment I knew making this video was a good idea...LBVS
Or, just stop the disc from spinning
UselessDood - if you really want the data GONE, that won’t work: the platters can be transplanted into another mechanism and read. Granted, this isn’t a threat scenario for most people; but if you have nation-state level adversaries... 🤔
@@darkwinter6028 that's interesting, I'm working on a how to video where I show how to remove the platters and put them into a new drive to recover data. I always knew that was possible but have never seen it done.
or just hit it with a hammer you fucking mad man
The biggest problem is the impact when putting the magnet on. This can cause a head crash
Well according to the label on the hard drive, the warranty is void if the hard drive experiences impact shock of more than 350 G's , I highly doubt not a magnet hitting the drive will exceed 350 g's of shock. I'm not going against what you said but that's what the label says on the drive.
Interesting, maybe that applies to a stillstanding drive? During operation, a shock is way more problematic.
That reading must be for unpowered disk. Remember my friend accidentially dropping an AA battery From 30cm to HDD and the drive died..
@@Petex90 I'm pretty sure that's a server grade drive, so it's a lot tougher
if he turned it off first so disk not spinning would have been better
Hard drive
*heavy breathing*
SSD master race.
SSD master race.
Lol
They dont breathe they spin instead say "heavy spining"
Dang. Now if only I could afford one
There is a neodymium magnet inside a hard drive, so it should erase everything all the time if you think like this.
No no no no. That magnet is properly placed to prevent interfering with the platters.
the magnet is placed in between two metal holders which stop interference
Yeah, but it's out of the way of the platter, the most the magnet can do is move the head the way it's supposed to...
Those magnets also usually have a special double polarity configuration that makes the magnetic field generated much smaller.
Guy: *puts magnet on hard drive*
Guy: nothing, still working!
Drive: *0 disk usage*
Lol
Also drive: 100% disk usage
-I can feel the hard drive working-
*Are you powered up by hard drives?*
Mal McKee
Issa joke
" You Say Run "
The strong magnet was likely just preventing the read head from properly moving across the platters surface and didn't effect the polarity of stored data. Now a powerful electromagnet on the other hand could invert some bits of data.
The disk slowed down when you put 40lb magnet over it due to developing of eddy currents in the disk which tried to oppose its rotational motion
Naw it slowed down and would eventually stop because it's triggering sensors used for fall detection. ThioJoe did a video where he was shaking hard drives in use and it exhibits the same behavior of freezing and queuing up requests for when it detects everything is fine again.
@@ConcernedCitizenPPCA as far as what I know, when fall detection sensors are triggered then the read write head would move away from the disk and park itself. But in the video it didn't.
Lenz's Law. Though the Aluminum platters don't attract the magnet on their own, the magnet induces a magnetic field in the platter, attracting the magnet and creating resistance (slowing the platter). Similar to how if you drop a strong magnet through an aluminum tube, it floats slowly through on it's way down. I guess the harddrive senses the slowdown and pauses activity until the motor can spin it back up to normal speed.
Are those platters aluminum though? I thought they were silicon....
@@WarpedYTMy quick search earlier said that most desktop use Aluminum and smaller drives for laptops are glass. I guess it just depends on the manufacturer and quality of the drive. I'm guessing the glass ones wouldn't slow down much.
@@WarpedYT Silicon in a disk shape is typically used as wafers for semiconductor-based integrated circuits, including CPU/GPU dies and memory chips among other things. These get manufactured through lithography and cut to size before being packaged, conditioned and sent to users of those chips (like RAM stick manufacturers.)
That's why there's no need to use silicon for a platter that's not used as a base for semiconductor technology. The platters are coated with a magnetic film, so it can be pretty much anything that retains this coat at high rotation speed and isn't magnetic. Aluminum can fit the bill.
@@michaelsteinbach Glass? There is something wrong there...
they are not aluminum platters, they are platinum
Aha, the old “Rare Earth magnet while playing Minecraft in a garage” test. A classic to be sure.
The only thing i am concerned about is the minecrsft version... You sure it didnt work?
Lol.
The Minecraft game is loaded into memory on startup, so disk data does not matter after that unless you load a world.
HDDs work via magnetic coating on a ceramic or glass disk, you would need around 140 pounds of force to magnetically erase one.
SSDs work via chips that hold electrical charge, a magnet isn't going to do anything unless you're using it to smash the drive, the best way to kill an SSD would be to remove the charge or overload it.
has 750gb hdd as daily driver
*sees 1tb hdd getting destroyed*
😧😨
Common dude they are cheap
Dude, the WD Blue used is around $50
@@bottomtext5872, 50$ are much for some persons.
@joshua broughton-herrick yeah you already edited it because you can't speak English either but you spelt peasant wrong.
joshua broughton-herrick in third world countries, 50$ is a lot of fucking money
6:24 the reason for the disks slowing down is because the magnet induces currents inside the disks (only possible when spinning) and those currents create opposing magnetic fields slowing down the disks. if it were the actuator arm getting attracted to the disks it would have destroyed itself in a second (head crash)
all the magnetic field is for is controlling the read/write apparatus. it works much like a speaker's voice coil.
all you are doing is interfering. also the enclosure is shielded, that's why no effect until you bring a really strong magnet.
There's a video of a guy with a really strong magnet. That's pretty cool
You'd need a 100-200lb magnet, that would bring the platter to the head and scratch it, too
Me: *Laughs in SSD*
Say hello to Killer USB 2.0
ok
fr
@@destiny_02 killer usb without the killers. I want this to happen.
Okay, that was unexpected. When I was in the Military, we used to destroy drives with a box that you put the drive in and then it zapped them with an EMP. That was military grade.
I know, I should do another video and try and EMP. While the computer is running
Sounds interesting!😉
No, you microwaved them. Totally different man.
no it was not an EMP or microwave...
it is a degausser.
@@freedustin You might speak a different version of English, but Microwaves are a form of Electromagnetic radiation. The machine we used was definitely an EMP generator. Took about 10 seconds per drive. You could fry just about any magnetic media with it. Floppies, VHS Tapes, cassettes, etc. What is your definition of a Degausser? Does it generate an magnetic field with electromagnets for a short period of time? One might say a 'pulse' of the electromagnetic type? An EMP? Either way, you're wrong. Fuck off.
I just subscribed.
I always wondered about the same thing if a magnet would affect it but I never would ever attempt to do what she did.
Awesome video buddy.
Keith
magnet.exe can take 100% disk now try it on a ram
Ram is non magnetic it wont work
@@shadowxxe do you know what is .exe?
or you just simply want to ruin the joke?
@@bislo1191 .exe is an executable program used by windows to execute an operation and yes i did want to ruin the joke
@@shadowxxe please don't, appreciate creativity 👍
@@bislo1191I appreciate creativity its just this isn't the most creative of jokes
4:00 You just killed the disk by impact not from the magnetic field. The metal in which the disk is encased is a type of metal that reflects magnetic fields, nothing magnetic can get through it (I don't remember the name of the metal now).
But if you hit the disk while it's operating, 1G could easly misalign the heads and you will have that behaviour. The previous hit also made some damage and thats why you saw a little increment in disk usage.
On the other hand, the disk usage meter doesn't measure usage, just amount of pending read/write operations. When you hit it the previous time it probably lost some RPMs and resetted the heads position and maybe some damage went into the disk itself so R/W was slower. Last hit could make the heads hit he disk, slowing it down or scratch the plates hardly. Some disks, when the RPMs drop just stop for protection.
I hope you didn't make the recovery into the same disk xD
6:20 The stopping happens because eddy currents are generated on the moving metal that oppose the magnetic field. That's what some exercese bikes use to slow the pedals. No friction brakes. Same principle behind magnetic brakes.
I placed a magnet on my laptop and it stopped working RIP
Same. Killed a 2010 MacBook Pro with a neodymium magnet. Much smaller that the one in this video. The computer refused to reboot and the hard drive made a clicking sound afterwards.
Fucking magnets! How do they work!?
@@NCXitlali Magents don't work! they don't have a degree. unlike Thermometers that have many and are overqualified!
@@thesole_randomguy fucking magnets! How do they work!? 🤣
Me too, it's gone now😂😂😂😂
You should use a fishing magnet with 1000 lb magnetic force.
ah its refreshing to see someone that doesnt try to dramatise everything and fill the video up with unnecessary junk. but rather just do what they set out to do and accept whatever outcome there is. you have my respect and a new sub.
8:56 Do you see that half circle mechanism directly behind the read/write arm? There’s actually 2 of them (top and bottom) and they each contain an AWESOME rare earth magnet which powers the arm’s movement as well as provides magnetic force for the actual reading and writing to the platter(s). I’ve taken *A TON* of of them apart to salvage these incredible magnets out of them (my wife’s company regularly has to destroy many of them as they outdate and contain sensitive info....I keep a STACK of these magnets for fun and projects. Your powerful magnet is disrupting the control of the arm and read/write head at it’s other end by disrupting the magnetic field which “tells” the HDD controller WHERE the arm is....effectively blinding the controller. No disruption of data occurred.....or the computer would no longer boot or function correctly (known as corrupted sectors on the drive).
3:25 hahah, that's how my pc works
Totally enjoy your video and the content of them. Great job as always.
This is crazy, I put a horseshoe magnet on a hard disk back around 2005 (it was already an old drive then probably from around 1998) and it erased it completely. There was nothing left of any file on there. They managed to proof a harddrive against that 🤔
Cool test. Though i have some comments:
1: Minecraft isn't ideal to test hard drive function. It will crash if you destroy data, but not instantly. Since the actually used data will be in RAM, destroying data on the hard drive will only cause problems randomly delayed.
2: The moment the system crashed may be caused by the impact and therefore fast movement of the drive. Especially since it ran normally again after a restart. But data may still have been damaged, that's impossible to know without scanning it all.
3: The magnet slowing down the platter spinning is very interesting! I would guess this happens because of the strong magnetic field disrupting the ones inside the electromotor driving the platters. Very cool footage i have never seen before!
4:24
The most beautiful thing ever
Agreed
Jake Playz
XD
When you wait for minecraft to stop working! Meanwhile RAM laughing at some corner of your mobo🤣
Not
Yeah I saw this coming, thankfully modern HDDs are pretty durable cause I once set a 100lb strength rare-earth magnet right on top of my laptop's HDD without thinking and it locked to the metal laptop surface and I heard the drive making a very distressed sound, but after I quickly pulled it off everything was fine and I got another year out of the drive before it started acting up (which may have just been age).
Wow, that must have been scary for sure, especially if you had important stuff on the laptop.
@@WarpedYT It was terrifying! I saw my digital life flash before my eyes that day lol
This is what I was interested in finding out. Someone pointed out that a transfer of data would've been more effective for a demonstration and that's true but ... the fact is Minecraft was installed on the HDD as everything else I imagine and there was no data loss, which is the part I was interested to discover.
I'm not sure if a powerful enough magnet would corrupt or erase data beyond recovery, I think that if the magnet is capable of flipping the data blocks and remagnetize them, everything will be gone forever. Although it is encouraging that it would take a powerful magnet and even then, all that caused was the platters to slow down and it resumed functioning after that, with all the data still intact. I have a few drives that were manufactured 10+ years ago, so I don't know how differently they would handle this same test. Good to know that newer HDDs are, among other things, more resilient to magnetism.
Nice test!
My guess is that the magnet merely held the read/write head in place, preventing it from moving, without changing any of the data. The computer acted wonky because the hard drive suddenly disappeared.
8:56 On the base of the arm there is a pretty strong magnet so it is natural that a magnet would not easily mess the data,
*FBI wants to know your location*
I didn't even need to finish this video to know the answer of the title, I once dropped a very high powered magnet on my computer and it instantly blue screened
Well the video turned out otherwise
Your hdd might be an old one
8:13 ssd*
@joshua broughton-herrick 🤣
@joshua broughton-herrick Its, not a disk idiot it has no moving parts
@joshua broughton-herrick NO its classed as a drive not a disk drive thats why its called solid state DRIVE and not solid state DISK
There's one more magnet you should try. It's called a bulk eraser, and we use them in commercial radio and television to erase an entire cart, or open reel. I think it sends an alternating polarity through the media. Should work on an HDD. Pretty sure any magnet placed directly under a CPU will disrupt it's operation, too. Caught a wild tech doing that to one of my client's PC when I was in the service field, back in the 90s.
The movie he is referring to is called "The Core".
ua-cam.com/video/2ePBNGmxVK8/v-deo.html
The reason why it did stop working until you removed the magnet is because when the platter is stopped, the head does normally touch it, so to avoid damage, if the speed of the platter is under the nominal speed of the disk, the head gets parked for safety. The only thing that makes it float is the air moved by the platter itself, which is the reason there isn't vaccum drives yet, but instead of that helium sealed drives do exist to increase the data density by stabilizing the air currents inside and making a tighter fit between heads and platters.
It's really cool that you took the time to try some of this, but really what you're demonstrating is interfering with how the disks operate; i.e- you stopped the drive from being able to physically spin and read/write normally, which is why the PC locked up then resumed again, rather than showing any kind of corruption.
If you want to show corruption then the easiest way would be to fill the disk with large files, and generate checksums for these. After attempting to corrupt the disk, you can then generate the checksums again to see if they changed, which would indicate corruption. Admittedly not as amusing to watch though 😉
First-time watcher here.
There is something about this guy - it just feels like he's gonna say "Fuh-get about it."
the movie you watched was called "the core" :-D
Oh yeah..."the core" I couldn't remember for the life of me, Thanks!
I really got to give you props for putting the things to practice rather than doing a whole investigation to theorize what might happen and then put it to practice. Which could get a lot of backlash from the elitists who already knew that or found out what would happen by doing some simple research beforehand and feel the need to point out that the result was obvious and also props to those who know about them and respectfully explain the reasons to share the knowledge.
I guess the simplicity of doing to know what will happen appeals me more than knowing what'll happen and put to practice.
Funny that you say that, a lot of things that I do sometimes I start researching them, just out of curiosity, I spend a lot of time researching and sometimes I think to myself, "can't we just do it and see what happens" I'm not even going to pretend like I thought nothing was going to happen oh, I thought the drive would be toast, so did every computer guy I talked to. Now I reached back out to those people and told them what happened, sent them the video, they are totally confused... These are IT guys I'm talking about.lol
Thank you
@@WarpedYT Lol, that sounds really cool, funny how you taught your friends something new too!
And thanks to you for the content as well man, keep up the good work man :D
All you have seen was in RAM, the magnet only damage the mechanism of the HDD.
Wut r u stoopid
@@Shikoyyan sorry?
@@rigby.other2w sorry
Very instructive, I know you always had to be very careful with floppy disks in the old days but I've never heard of a hard drive being damaged by an external magnet - what probably happened with your neodymium block magnet is that it disrupted the mechanical movement either of the platters or the head temporarily, creating the symptoms you saw, but did nothing to the magnetic data on the disk.
The reason is because modern hdds have a feature where if the drive is shaken, or comes in contact with a magnetic field, the drive will stop reading and writing, and Windows will set up a queue of processes when the drive is ready to read again. That is why all of the programs opened when he pulled the magnet away.
I think eddy currents may have slowed down the disk, they don't have a very strong motor anyways
yeah- i'd say the magnet may not affect the data but certainly messed with the motor as seen when it slowed down while open. Electric motors are based on magnetism.
You put that thing in computer cryostat, it will love for ever! Muahahaha. Don't let skynet get a hold of this info!
"disk begging for help at 100% usage"
*opens Google Chrome*
do you wanna blow up a city or what? you can't be doing that
My man opening minecraft to use Some cpu also
His computer: has 2 big GPU’s 😂😂
By the way, when the magnet is there in your HDD. that’s how usually my PC responds with no magnet...
Warped perception: 40 pound magnet
me: price or weight??
What if we use electro magnet. In one of the episode in 'Breaking bad' they destroy the evidence using strong electro magnetic. Is that possible?
It does erase the data if it’s big enough and close enough, a few people have tested it, including mythbusters
The reason the magnet slowed the hard disk has nothing to do with the pull. The disk substrate is aluminum, which is a good conductor. When there is on a strong magnetic field, current is generated in the disk, like in a generator. This acts to produce a drag on the disk, as if you pressed your hand against it, which is more then the motor can handle, so it slows. Removing the field eliminates the drag, and the disk works again. (Some drives use glass for the disk substrate, so those should not slow.)
If you were successful in erasing the disk, it would become useless because in addition to the data, there are "clock tracks". (Some drives embed the tracks with the data, while others dedicate a single surface of the stack for this.) These are the "roads" upon which the data are written on an otherwise featureless surface. Erase those, and the drive becomes a piece of wall art. When the drive is newly-made, these are written in by placing the drive in a "million-dollar machine" at the factory. (Have you seen the jumpers labelled "factory use only, do not connect? That is set during the initialization.) You know that little curved hole on the drive with tape over it? That is open during this procedure so the machine "knows" where the heads are, to allow writing the "lane markers" onto the disk. That is done only once at manufacture.
Byte 6d65 no it was just the fysical shock from the magnet hitting the hdd. A hit with a stone would have had that same effect. The readhead on the arm skips some tracks and the hdd has to find his track and required speed for it again and thats all of the delay, all thats seen here.
And indeed, there is a supetstrong neodyniummagnet half an inch beside the platter inside the cover. That cover that diverts the strong enough fieldlines to destroy data easally around the platter.
I agree - he should have turned off the computer so that the HDD heads would be off the platter or in a landing zone on the platter, then applied the magnet. Of course, the final result would be the same.
Well I did try the magnet on the platters themselves more toward the end of the video, I'm going to hook that hard drive up again and see if the data is okay. I'm pretty sure even the steel cover on the hard drive provides some sort of magnetic shielding.
@@WarpedYT Yes, you are right about the shielding. I'm sure it is intentional on the drive manufacturer's part.
When the HDD detects any kind of shock, it parks the read / write head until it detects that it's still again... It takes a few seconds until it read data again.
I am pretty sure that in the movie you watched the hacker used an electromagnet which has a job of wiping disks and ruining tech.
Yes, it may have been an electromagnet
Modern hard drives have a protection system where if strong magnetic fields are detected it will shut down the hard disk to prevent further damage. That's why it did not work when the magnet was on the hard drive. When the magnet went away, it automatically resumed what it had to do and it opened all the programs.
Your more likely to break your drive by the impacts you were doing to it. You have to be careful with shocking it to make sure the test is not tainted. I know this because I've been working on them changing out heads to recover data from them.
What happened when you put the strongest magnet to the harddrive is the harddrive had a safety feature where if it feels a certain amount of gforce or movement, it'll completely stop reading and writing like you saw when you took the cover off and when you release it, it'll resume whatever you had in queue which is why a bunch of the applications you clicked opened up. With an SSD, it won't affect it at all because it's all electronic and not mechanical.
4:10 "Try To Open Up Bowser"😮😮
I've often wondered about this since I have memories of accidentally ruining a reel-to-reel tape years ago. Thanks!
Minecraft helped the Hdd live.
The strong magnet interfered with the spinning disk's motor's magnetic field. In order for the DC motor to work, it needs power in the windings that'll produce a magnetic field. But if you put a strong magnet near the center of the disk which is where the motor is located, your magnet's magnetic field will start cancelling the motor's magnetic field which if the motor's magnetic field and the magnet's magnetic field cancel each other to zero, the disk stops spinning completely. For more info just search for " how a DC motor works". As for the actuator, the reason why it stopped working is because it only starts reading the Plata after the disk reaches its maximum revolutions per minute (RPM) which can be either 5400rpm or 7200rpm depending on the manufacturer's design, otherwise the actuator arm will retract to its resting position which in this case the center of the Plata. Newer hard drives' actuator arms rest on a compartment outside the plata. At full speed, the Plata creates like an air barrier or cushion that prevents the actuator arm from scratching the Plata when it's accessing data on the Plata which when it does scratches the Plata will result in bad sectors or inaccessible data or permanently damaging the Plata or the hard drive's storage area.
A 100 pound per square inch would destroy the hardware
The reason why the disk platter slows down is most probably due to a phenomenon called Eddy currents. It causes dampening by converting the kinetic energy to heat energy.
Moving conductors of electricity in a magnetic field slow down due to small induced whirlpools of currents.
Hard drives in fact use Eddy currents to control the reading pin. Since it is moving very fast, it is very easy to overshoot the sector you are trying to read. To avoid this, the backside of the pin us under magnetic field and eddy currents damp the quick acceleration to provide more accuracy.
Now I want to play Minecraft
The base of the arm on the regular hard drive has a magnet close to the strength of your 40lb. magnet under the silver part but its tiny.
this is why SSDs are better
After making this little video I was thinking about doing as episode on hard drive vs. SSD. Ssds are the bust
@@WarpedYT yeah basically
but SSDs can have quicker data rot because they need an internal battery to keep your data when the drive is off, because SSDs use electrical charge to store data. This also means that if yhe internal battery dies then you basically can’t shut off the computer because the data will be lost extremely quickly. So for now I’m on team HDD.
That’s for DRAM-SSDs btw
yea dude I hate when my 40 pound magnet attaches itself to my hard drive and crashes my pc, wish I had an SSD then I wouldn’t have this issue
Excellent! Makes one wonder why the disk slowed down with the magnet near. Very interesting Matt!
Great video man, really wondered how it was bad, now I know. Thanks man.
Explaining what is seen with the open HDD, the disc is Aluminum, a conductor, and spinning it in a strong magnetic field turned the HDD into a really good eddy current brake. I built something similar for my stationary bike...3/8" aluminum disc 6 " in diameter soaks up all I can put out and barely gets warm!
That makes sense, because each of the magnetic regions on its own wouldn't really attract the magnet since they cancel each other out, but the disc as a whole has magnetism.. very interesting
@@WarpedYT Find yourself a very thick-walled aluminum tube and a ball or cube magnet that will easily fit thru it...as in able to just drop through by hand. Test to make sure the tube is aluminum by touching the tube in several places with the magnet...it should NOT stick. Now hold tube loosely by one end so it hangs vertical and drop the magnet in, letting it fall on something soft. It'll make you go "Hmmm"!
The Movie was "The core". That HDD's are from 2003 and he used handsized electro magnets (and a microwave for the CDs).
The reason why all those applications suddenly opened up was because you clicked the shortcuts to open the apps while the magnet was attached to the hdd, so they only opened why the magnet was taken off
The fact that it's still working is very unexpected
A magnet physically blocks the transmissions of data in a computer, and youd need a pretty strong one to rip through a hard drive. Thats why you saw the computer start working again after you took it off, and while its definitely not a good idea it (probably) wont destroy the data burned into the hard drive (probably). The second air leaks in its dead tho. Remember that scene from indiana jones where the guy crumbled when exposed to air? Think of it like that
Also disks in a harddrive is covered with a protecting coating :) Which contributes to preservation. I read an article saying that in theory it would, but it requires a very strong magnet, that common people generally cant get a hold off :) If you wanna hide your porn collection from the world when you throw out hdd, drill a hole through it and dump it in water before tossing it, or seperate disks from hdd and drag a knife over all the layers. Also, you can take off the bios from the pcb board (curcuit on the back of the hard drive (just destroy all chips)) to make it near impossible for anyone to read. Since all hdd has specialized bios chips and it would therefor be very unlikely that people would be able to recover anything, even if they swapped the disks, due to incompatibility. For all those of you who came here to find out if you could dispose of it using magnets.
i know this is an old video but i think the reason it slows down with the magnet near it is probably because eddie currents are induced in the platter which in turn creates a magnetic field and opposes the spinning movement, similar to what happens with dropping a magnet down a (non magnetic) metallic pipe
The reason is because modern hdds have a feature where if the drive is shaken, or comes in contact with a magnetic field, the drive will stop reading and writing, and Windows will set up a queue of processes when the drive is ready to read again. That is why all of the programs opened when he pulled the magnet away.
To destroy your hard drive with a powerful magnet you need to create an oscillating strong magnetic field that will impart eddy currents. For a static field you will need a much bigger magnet. Take a taser and connect one lead to a home made copper wire coiled in 10 or so turns about 1.5 inch in diameter, and place other end of the wire couple of mm (or about 1/8 in) from the other taser end. (Do not let them touch) Technically you will be creating a MP that will end your hard drive and you computer. Disclaimer Keep your phone, peacemaker or other important device away from it. Do not do this at home. Do not recommend you or anyone doing this. This instructional intension only.
Lol... I was thinking about something like that or a magnetron focused through a proper funnel. just for the heck of it, but I want to do some slow motion stuff with hard drives, so I wrote a different type of episode coming up, something that will apply to everybody that has a computer. Thanks for the instructions for the awesome science project!, I may do some type of EMP generator of some sort, maybe in the future, right now I have a bunch of episodes to catch up on. Thanks for the feedback and thanks for watching
*pacemaker not peacemaker
Some of the things that are slowing the disk are:
The disruption of the motor magnetic field.
And the interaction of the magnet and the aluminium disk. If you want more info on that watch this ua-cam.com/video/sENgdSF8ppA/v-deo.html (He is using cooper instead of aluminium but the way the react to magnets are the same)
Me:watch movie Minecraft
Mom and dad:mad
Me:i have command block
Me: revome mom and dad
Succvel
His 50 dollar worth of etherium will be worth thousands today 😂
I know someone who worked for the IRS and they used electromagnets to damage harddrives. They used electromagnetic wands that plugged into regular outlets that didn't totally erase the drives but corrupted the data to the point the disk couldn't be used again. He was told they used to have special rooms with electromagnets even more powerful to try and erase the data. Don't know if it's true. It's what he told me.
This was an interesting experience. Tho, to better test the mechanical hard drive disk, you should've tried copying a large file, a video file for instance, copy the file file from the hard drive to a thumb drive, so it should be reading data at around 120 MB/s, (to access the disk section in your task manager, go to the second tab, called Performance, then go to Disk). Also to note, the hard drive you have spins at either 7200 or 5400 RPM, so when you try and put the magnet on it, we should see speeds go down live. That'd be interesting. But great idea regardless, I honestly thought the powerful magnet would just screw up the hard drive and break it! Keep the cool ideas coming! :)
Your absolutely correct, I was a bit unprepared, that's exactly what I should have done, and what's crazy is I have the USB drive right there, but it was like 8:30 at night, we had just finished a 10-hour shoot with the see-through engine, I was beyond exhausted. but I actually have one more hard drive video I want to do, it's going to be a seriously extreme test and something that happens to people very often. I'm going to use your idea in that video. Thank you
@@WarpedYT Great work man, happy to hear you're putting in the work, I know for a fact it'll pay off. And you're welcome, honored I was of help! :D
the platter spinning down, to me seems like the magnet was interfering with the motor feedback winding. iirc the drives circuitry is looking at the actual real time speed of the platter and position of the arm, adding the magnet slowed the platter because the feedback data was not what it was expecting, attempting to correct platter speed and getting the data it wants (platter speed) to a range it accepts.
You put a magnet on a hard drive where you have you ethereum wallet? Hahaha
it works if the hard drive is not plugged in. Minecraft runs on ram it will load on the ram and shouldn't be effected except when saving but the system was running on the hard drive crashing windows when the magnet slowed the rpm of the disk drive down. try using an electomagnet or the drive not plugged in
Im surprised that the pc is still running and the powersupply is not dead. when looking at it 2 of the GPU's are connected with molex to pcie connectors. They are also somehow running considering that only the six pin is plugged in for the reference cards. im in disbelieve that it even works. You should probably get a better Powersupply or get rid of some cards since the mining craze is basically dead.
>creates backup image, on the hard drive to corrupt. Nice. Big brain.
I had worn my starfleet communicator pin while playing on my 486 with windows 3.1 and dos 6.22. It messed it up big-time. Had to reformat and it never did work quite the same again. Glad they have improved things over the years.
Starfleet communicator pin ?.
@@WarpedYT Yes. I bought one at a show a long time ago. It has a powerful magnet so you can attach it to your shirt.
Internally is magnets for the head actuator. These magnets are actually extremely strong rare Earth or neo magnets. But what would happen when adding a magnet is the head can no longer respond correctly because the magnetic field for the head has moved. Running a game and running Windows will run from memory while doing your tests, so this is why it will continue to run even with a magnet on it. But the impact and the shift on the head can cause the head to scrape the platter. It takes serious magnetic fields to pull the material on the platters. Now, a microwave will kill it extremely fast. But know you know why EM Pulses are not used as weapons for war, since it would only effect power, and it takes serious power to do any damage. We are inside massive magnetic fields all day, and things are built to withhold against magnetic fields large enough to be felt from the moon.
"Now let's open up a game"
Do minecraft
"Oh, minecraft!"
YEES