How to use UEFI | Every other YouTube video is WRONG!
Вставка
- Опубліковано 30 вер 2024
- In this video, I go over UEFI and what it is, how to use it, and if your installation is UEFI enabled.
Attribution:
Linus Tech Tips: • BIOS and UEFI As Fast ...
PowerCert Animation Vids: • BIOS, CMOS, UEFI - Wha...
Chris Titus Tech Bios vs UEFI: • UEFI vs Legacy BIOS Bo...
BTNHD: • Difference Between BIO... .
►► Digital Downloads ➜ www.cttstore.com
►► Reddit ➜ / christitustech
►► Titus Tech Talk ➜ / titustechtalk
►► Twitch ➜ / christitustech
4:45 suggested method by M$, in command prompt: reg query HKLM\System\CurrentControlSet\Control /v PEFirmwareType (return code: 0x1 -> BIOS; if 0x2 -> UEFI). Another way is check output of bcdedit (Vista+) command...
9:44 in theory yes, MBR partition entries has relative sector and number of sectors so you can reach size ~4 TiB (512B sectors) but this is very risky and could cause data corruption by software with internal 32-bit calculations.
Myszka - under W10Pro, that req query string doesn't work.
@@davybloggs1564 It doesn't matter if it's "Pro", "Home" or another edition because as registry value name suggests: "PEFirmwareType" is PE (Preinstalled Environment) specific thing. Before querying registry you must instruct WinPE to update his registry with this command: wpeutil UpdateBootInfo
Under (installed) "W10Pro" you can check "BIOS mode" (UEFI or Legacy) in msinfo32; by checking bcdedit output; looking in Disk Management at partition types on your boot drive; etc.
@@MyszkaAgresorka so just to make things clear i can install os on drive larger than 4 tb as long as the partition is less than 2tb with mbr while with gpt i have no suc problem? Is gpt and mbr a feature of os or bios?
@@georgesmith3022 MBR is a feature of BIOS. (And UEFI in CSM mode.) GPT is a feature of UEFI. Both are features of the OS. For example, Windows 7 does not support UEFI, so if you have UEFI you have to use CSM mode.
@@georgesmith3022 You can do that but Windows 10 can't update an MBR installation anymore. I got the problem and had to change to GPT to be able to update to version 190x.
I'm still confused. This video needs diagrams.
Probably should of done it like this
*BIOS* (Legacy or UEFI) >>> *Bootloader* (Legacy or UEFI) >>> *Installation Media* (Can ONLY install the TYPE of system it is BOOTED from)
@@ChrisTitusTech With this in mind, I rewatched your video and it is much clearer now. I missed the distinction between the ROM and Bootloader.
Yup, it is very confusing and a very hard topic to cover. Glad that cleared it up for you.
What Chris has not made plain as day here is that Apples implementation of the Extensible Firmware Interface is actually contained on a small 100mb boot partition of the computer hard drive itself and is not contained in resident flashable ROM as is the scenario on a PC. A Mac has no directly addressable BIOS as such and merely a few TPM enabler chips on the mobo itself. Universal Extensible Firmware Interface is a hybrid of both traditional BIOS and EFI hence the 'Universal' moniker. Indeed to make Mac OS boot on generic intel hardware as in the case of an Hackintosh you need to create a bootable EFI partition installation with a piece of sofware called 'Chameleon bootloader' or 'Clover' to enable this pre boot environment that Mac OS requires. In practice it is a bit more complicated than this as older BIOS only mobos often require a special bespoke crafted DSDT file that enables the EFI instruction set to handshake with the legacy BIOS. If you ever intend to go down the hackintosh route check out the Tony Mac OSX86 Hardware Compatibility Lists (HCLs) and choose a more current UEFI model that is fully supported and you will save yourself a lot of grief and heartache this way. It is a truism to say that if your mobo supports UEFI out of the box it is more 'vanilla' and henceforth more hackintoshable by its very nature. Editing and compiling DSDT file translation tables is not for the technologically inept or faint of heart.
Can you explain this to me? I have mouse control in my BIOS (which should indicate UEFI), my C: drive is MBR, but when I load msinfo, my BIOS mode says "Legacy" I'm really confused about this. I don't know what I'm using. Since my PC is under a month old and the hardware is new (not old), shouldn't I be using GPT/UEFI?
Idea for a next video: what is secure boot, which OS-es support it? What is the relation to UEFI? What if you linux distribution does not support it?
Latest Linux distro use a shim bootloader
@@beezanteeum that's compatible with a secure boot enabled computer right
@@powerpc64
Yes,
Except: Arch or any of it's forks like Steam OS, Manjaro, Artix, etc.
@@beezanteeum Secure boot will only work in UEFI. It will not work with legacy uefi. So it will be a requirement for windows 11 I guess.
@@harvester7578
That's my point, but not all Linux Distro with UEFI support, has a shim loader
Just look at Arch and their derivatives, they support UEFI, but you must sign your own EFI bootloader or build your own shim loader
I've watched the rest of the video, and I do not agree with this. UEFI does not have anything to do with fancy screens, it is a method for starting up (much larger than 512 bytes) boot loaders from a (much larger) partition/slice on the disk.
A years old Win10 installation can even be converted from legacy to UEFI with a couple of recovery console commands. Done that
can you provide me those commands i am unable to convert from MBR to GPT
It says following when i run mbr2gpt.exe command :
MBR2GPT: Attempting to convert disk 0
MBR2GPT: Retrieving layout of disk
MBR2GPT: Validating layout, disk sector size is: 512 bytes
Disk layout validation failed for disk 0
lol your reactions
Haha, I tried to show how I was feeling listening to these videos.
As someone who can't get my arch install working because of UEFI, and nobody wants to explain it, just give a command without any explanation, thank you. I've seen your videos occasionally, but this wins my subscription. Looking forward to more content!
The main difference between classic BIOS and UEFI is that regular BIOS can only read MBR partitioned drives. Regular BIOS also only reads the first sector (512bytes) and if it is not a boot sector it will try the next device. Now UEFI can read gpt fat32 formatted drives and can boot from ANY partition or folder on the drive (via UEFI console), although boot files are usually stored in EFI folder on the root of boot drive. UEFI reads a file with EFI extension.
Awesome video! Once again you take a seemingly obvious and mundane topic and make it very interesting, while clarifying the confusion and misinformation espoused by other UA-camrs. Well done! But is it true that UEFI is limited to 9.44 billion terabytes of storage? The CRC32 support is nice, but the limited storage is a real deal breaker for me. I need trillions of terabytes! Also, you need to warn us if you’re going to be showing a clip from Linus Tech Tips. His voice is rather jarring after hearing your voice. I winced a little. Really glad you don’t do all the obnoxious UA-cam gimmicks like other tech channels do. Keep doing it the Chris Titus Tech way! Cheers!
Sure hope Linus Media Group doesn't issue a copyright strike against Chris for the use of 20s of video!
@Appalling68 Oh no, don't steal my $0.50 cents of ad revenue! Lol, I don't care if they do, I needed to show how it is presented in other videos so folks understand that GPT is really what allows the 2TB+ drive partitions. Linus wasn't wrong per say, its just how it was presented made it seem like UEFI was the solution when GPT is.
@Mitchel Valentino LOL, funny you say this, as when I was editing I was like ahhh... I added a gain filter to decrease his volume by 50% so it made his clip quieter than the rest... HAHAHA.
I fck hate UEFI, not only it makes cloning difficult of windows it actully brings more problem then solutions.
for people that want safy - DON'T USE UEFI ... disable it ... it gives the OS compleat control / able to modify you bios setting ... it's just a matter of time until a virus destroy your hardware.... there ben a few do this in the past ... "melt ware viruses" Legacy boot gives no access to the Bios chip ... (unable to flash it without a dedicated flash environment "32 bit dos -most manufacturers" and will be unable to do this on UEFI bios) ..
Unlike MBR, a GPT disk also lets you have greater than 4 primary partitions, in fact up to 128 primary partitions.. I think all UA-camrs neglet to mention this fundamental difference as well.
I'm sorry, don't know if anyone else have mentioned this in the comments, but I had computers with BIOS menu mouse control long before UEFI came along.
pardon my ognorance here but why would anyone need a boot Partition greater than 2 TB? heck bigger than 200 GB? well I could kind of see this with some dedicated enterprise level server. Just a thought anyway....
Everyone in the world knows UEFI is used with GPT and BIOS/LEGACY with MBR. We all agree on that... where the destination is not made and where it gets confusing is ... Can you still use BIOS/LEGACY +MBR and Partition a larger than 2TB HD into 2TB multiple partitions with MBR and never have to deal with GPT? and Can all O/S's Support LEGACY BIOS +MBR as such?
Why not use BIOS/LEGACY + GPT?
Note, some laptops that have both legacy BIOS and UEFI, may have a problem with certain Media button controls if the system is forced into UEFI mode only. Dell laptops drove me crazy for weeks trying to figure out why the volume buttons would not work. Had to enable both Legacy BIOS and UEFI, even though it was on GPT and booting into UEFI, the media key's would not work unless both were enabled.
Might be worth making another video talking about bios boot partitions and the bios_grub flag need to boot GPT formatted hard drives in legacy mode. The thing that I don't understand is how to use UEFI on raid 1, 6 etc systems so you can boot from any of the HDs
My grub always complains to me because I have my boot partition raided. HPUX used UEFI way back before 2006. When using software raid it raided the boot partition and you could set UEFI to boot one first and if it failed go to the next.
Would be interesting to hear more about using UEFI on Raid 1, 6 etc.
Your definition of "old computer" is misleading. 5 years "old" in fact is relatively "NEW" computer. I could NOT install large drive as boot drive to my old intel Core 2 Quad system from year 2008, because it did NOT support uefi at all. Also the "old legacy bios" (which is/was the only option available) did not support booting from GPT disk and only MBR -- and yes, I did try (both, to install fresh and even tried GPT disk with already installed OS from another computer, the system reported that there is no bootable drive installed at all). Yes, I could use GPT drives in the system later as data drives, but BIOS refused to boot up from one.
And NO -- you can not use big disks with MBR and cut it to 2TB partitions and use it all -- you can only use up to 2TB disk space from the entire 10TB disk when it uses MBR. Yes, it does say there is 8TB more space, but you can not create any more partitions into that space. Tried that also.
Also working on a 2008 core 2 due!
(Probably called a dinosaur!, but can still get it to run win 10 and ubuntu 18.4 and mint 19.04)
And although the Bios says support UEFI, for the life in me, I cannot get it to boot into a UEFI drive.
Kind regards
I see in my BIOS I have 3 options: Legacy, UEFI with CSM and UEFI without CSM. It is set to Legacy. So you recommend UEFI over Legacy? What is the difference between UEFI with CSM and UEFI without CSM? Which one is the best?
can i ask you something i build a pc then i boot up my computer but i cant get out of my bios.
Thanks! excellent video :-)
that GPT vs legacy HD partition *size* (as in - chop up a 6tb into 2tb partitions) was something i was wondering about (gpt clashes with my current backup strategy)
I use gpt in legacy bios mode
I have just one question: How in the heck do I uninstall UEFI from my computer and get back to BIOS?
Use a Core2Duo Motherboard
you can look in your bios settings under Boot if there is no lagacy support then Buy one that has...
That was a rhetorical question.. BTW.
I had issues installing grub when I was starting to learn more about linux. That is when I knew I had to check for UEFI boot.
Any drive with windows installation normally shows up as two drives, one with UEFI label. It is the one with UEFI label to select while booting. Even if there is no UEFI shown or you select the non UEFI, windows automatically detects UEFI compatibility and switch to UEFI in a normal scenario.
My laptop is new but is stuck with legacy BIOS (I don't know why, it's only released last year, curse you HP!). Well, I had no idea I had to run it on GPT and got errors. That is when I knew legacy supports large drives.
Also, Linus was not that wrong, he was referring to MBR. GPT is a new way for legacy BIOS.
P.S. You can get errors if you try to partition GPT drive in Windows. First, it will give you a warning if you partition during install. If you don't partition during install and does it later, you will soon get BSoD's and such problems. I don't know why this happens. This is the reason I can't run Linux with Windows in my laptop. Any Good Solutions? please reply.
I've always had issues when dual booting Windows on UEFI based Grub. The only way I've had success is to use Legacy when doing the Linux installation and the os-prob the windows install into it. Note: I do this with 2 different physical drives.
Due to the way Windows now does it's bi-annual upgrades I highly recommend separate drives as it can overwrite the grub bootloader if it is on the same drive. If you want to modify the windows based bootmgr I recommend using EasyBCD (neosmart.net/EasyBCD/)
Also, Milage will vary in Windows as it seems like it is constantly changing the way Windows 10 is setup. It is very hit and miss. I believe Windows 1803/1809 switched to favoring UEFI mode and why the setup fails when loading these images in Virtual Machines where 1709 doesn't have an issue.
As far as Linus's video, I was disappointed in it, as he didn't mention GPT one time and made it seem like all you need is a UEFI based system, which of course isn't right.
@@ChrisTitusTech I had no issues with dual boot along Windows 10 on an MBR partition ever but on GPT it really is problematic. I am using two drives for windows and linux separate as you said in my old desktop and I used EasyBCD on a Friend's PC. Also, lately using UEFI was somehow causing problems using the new Radeon VII GPU. Somehow AMD forgot UEFI compatibility. There was some fix for this, I don't remember right now.
Weird that UEFI would cause issues with your GPU. I can't wait to try out that card, but good to know you tracked it down to that. I've had my Windows do some strange things with my GPT drive and at one point it was booting sometimes and other times not. I found that how Microsoft setup bootmgr relies on a very strict partitioning scheme. When I carved up part of my 6 TB with some Linux partitions it really didn't like it. I fixed this simply by booting from another drive that is setup on an MBR which Microsoft's bootmgr sees just fine.
@@motoryzen Maybe I was confused with partitions drives, sorry, it's been a long time since I DIY deeper into these things. I may be forgetting things here and there.
@@ChrisTitusTech Exactly! That partitioning scheme was my problem. Thanks for that workaround. I will set up to boot from an MBR disk instead. Also, I am not sure that GPU problem is so much of a issue, let me check weather it is specific to something or there is something else behind it.
There is no such thing as "UEFI BIOS". Just UEFI.
4:53 - Windows Installer will be displayed in native resolution, with additional DPI scaling, where in Legacy Mode it's in low resolution, 4:3 stretched.
efibootmgr can indeed change the boot order. It can also add and remove boot loaders. Fastest startup time (and better security if you deal with signing the image in a password protected bios) is to directly use the linux kernel as your boot loader, skipping Grub or similar. Doing that involves setting up the boot entry via efibootmgr.
Thx. Helpful to know more about efibootmgr.
One of the main reasons for UEFI is Secure Boot, not to make the BIOS pretty, who cares about that?
You are correct GPT is nothing to do with UEFI, it existed longed before UEFI. Yes modern secure boot systems usually use both UEFI and GPT. During a new install Windows 10 defaults to using GPT partitions with UEFI BIOS's. If you go into the BIOS, turn Secure Boot off, turn off UEFI to give you Legacy BIOS and then initialize the disk as MBR, you can often install Windows 10 like we use to do with old BIOS's, it then only creates 2 partitions (system and boot), instead of 4 partitions (system, boot, MRP, EFI). Some UEFI BIOS's do not support Legacy BIOS at all. When Windows 10 boot gets totally screwed up, it is much easier to fix yourself when using Legacy BIOS. Most people do not understand the EFI partition! I think only the operating system understands this for the Secure Boot feature. Often Windows 10 Startup Repair fails to fix Windows 10 boot issues, it sometimes even refuses to run at all. But using Legacy BIOS and MBR partitions you can usually fix the booting issues in Windows 10. Some recent UEFI BIOS's have had issues with Windows 10 compatibility, Microsoft blame OEM Manufacturers, Manufacturers blame Microsoft. Recent Dell Latitude laptops for example have ended up with 23 BIOS revisions to work correctly. So in my humble opinion, Secure Boot and UEFI BIOS has become a pain in the arse! I hate the damn thing all together.
It has been claimed that UEFI Secure boot with GPT is faster at booting than Legacy BIOS with MBR or even GPT. I have not tested this myself, I have not noticed UEFI BIOS being quicker in general.
Strictly speaking when ever I said Legacy BIOS, I should of said Legacy Boot. The UEFI BIOS enables legacy booting, ie. booting using non UEFI boot media, whether hard drive or UEFI DVD ROM operating system media. The UEFI BIOS does not turn into a Legacy BIOS, it just enables Legacy Boot, so it appears to be like a Legacy BIOS, but, really is still UEFI BIOS allowing non UEFI media booting.
A good video, but I would like to point out one minor detail. You hint in the video that a big disk using MBR has to be split up in partitions less than 2TB in size each. It's worse than that: you simply can not address sectors beyond 2TB, so you can only use the first 2TB of the disk.
Yes exactly! Another detail worth noting is that the bytes per sector also determines the limit, so if you have a hard drive with 4,096 bytes per sector rather than 512, you can technically have up to 16 TB on MBR, and would be able to go beyond the 2 TB limit in that case! MBR or GPT determines the number of addressable sectors, and that multiplied by the bytes per sector, will determine the actual limitation of addressable storage itself. That's why GPT's limitation is approximately 9.4 billion terabytes, but that's with 512 byte sectors. 4,096 byte sectors could be about eight times that theoretically! There's a lot of little intricacies to this.
What a waste of time watching that.
For any UEFI-capable OS install media, the easiest way to make sure you're installing in UEFI mode is to get into the 'BIOS' boot menu and it will likely have 2 listings for the media...one w/ "UEFI: " or "(UEFI) " or similar at the beginning. Also, there were old legacy BIOSes (at least AMI BIOS) before UEFI was a thing that had mouse support to navigate the settings.
this comment has ended my 1 and half day long headache. thank you.
@@toasterthebrotthe headach continues, when you don't get your wifi working in UEFI installation. In Bios installation everything works fine??
@@emanuelsanchez3762 idk, but i dont think it matters whether you boot the uefi or the bios version
@@toasterthebrot if you need broadcom-wl to have wifi it's a problem. I have wifi when I install via bios, and I don't get it to work when I install via uefi
Hi Chris, great info, I was asking this question on Big Daddy Linux Live a couple of days ago and they sent me your way, the reason I was asking is that I'm using PureOS and it doesn't have UEFI support and I really wanted to install it to my main system, it seems it's nothing to do with security, but mainly eye candy and disk size so I'm ok with that. One thing I've noticed is that when you call up your boot selection menu (F8 or F12 etc) in some cases it will name the usb (EFI USB and some name) or (USB and some name -- Legacy mode) thanks for the video!
I keep uefi on if i can on the computer. If it doesn't work or i haven't figured out how to use it, i go to BIOS/Legacy.
For me, they're both good options but uefi runs a little better and closer to hardware
They're not both good options at all. CSM shouldn't be used. It's not secure and has less performance.
Hey Chris, how bout a video bout CoreBoot?
Thanks first I've seen this project, I'll have to check it out!
@@ChrisTitusTech CoreBoot and LibreBoot are nice projects attempting to open source bios part of your PC. They are a must have for the "paranoid enough" people who don't want to be spied on by the NSA.
4:06"...I believe I can actually change...." that does not strike confidence.
Hey, Elon musk becomes a youtuber :)
Thanks for a good video on UEFI. Up to now, my impression on UEFI was, that it was a Microsoft feature to block other systems to be installed on that PC. My PCs are all old, so I only experienced the BIOS, however my Sandy-bridge i5 laptop from Dec 2011 supports the mouse too on its BIOS. Since I plan to build a Ryzen PC, I have a number of questions about UEFI:
- What is the real advantage of UEFI vs legacy BIOS for the users, not for Microsoft?
- Why is the UEFI boot faster? The disks are the same and that determines for 95% the boot speed.
- UEFI seems to need a small boot partition and MBR also supports a boot partition, but by default it uses the unused first sectors of the disk. Is this the real issue, UEFI needs GPT for booting the system and the BIOS needs MBR?
- On installing or formatting disks on old PCs, the installer/disk-utility always asks MBR or GPT, so I assume, that is completely independent from BIOS or UEFI? Except maybe for booting?
- Why should the graphical interface be for UEFI mode or is it also supported for legacy BIOS mode?
We need probably an additional video, that explains the differences in the underlying architectures.
Up to know I used MBR and I use ZFS for data and as OS boot file system. I intend to move all 3 HDDs and the SSD to the new system and I expect that Ubuntu will detect the new processor (Phenom II -> Ryzen) and other changed hardware and boot without any change or re-installation. I will ensure that all disk have a copy of the MBR boot loader and I will keep the sequence of connection of the drives the same. Probably I'll stay on legacy BIOS and try to move to UEFI later, if it has any significant advantage.
TLDR is stick to Legacy it will treat you better.
UEFI basically gives you fancy graphics on the bootloader, and I personally experienced about a 5-second decrease in boot time moving to UEFI.
So past the fancy graphics and saving a couple seconds, that's really all you gain. Really not worth it unless you have to have the latest and greatest. Legacy can do some graphics, but not a full HD wallpaper with special icons for specific operating systems.
One advantage of UEFI over bios is that like rebooting to safe mode from windows you can also reboot to UEFI. Without having to hammer F2 during POST.
@@FutureReverberations I don't have windows, so I have absolutely no advantages from UEFI, only disadvantages.
@@bertnijhof5413 Such as? Honestly curious why people are hating on using UEFI so much? It's perfectly fine, I think the feature everyone's hating on is SecureBoot, which the two are often conflated together, but are NOT related.
@@ChrisTitusTech
Or, if you using mechanical Hard Drive and you tend to abuse it, such as moving it physically while your device is still accessing your harddrive (it usually happens when you are using laptop while walking) or you dropping your device, either intentionally or unintentionally
Since i have 2 different PC, one is Legacy-MBR (Netbook), one is UEFI-GPT (a Low-End Notebook)
I drop my netbook just once, and a few months later my harddrive goes unreadable, at all
But my low end notebook, even though i drop it till god knows how much i drop it, it still working even though my display gone bleeding
There is also difference in language used BIOS mainly coded in Assembly and UEFI coded in C++. UEFI is more optimized in code because it's newer and offers more security.
I guess I still don't know enough to understand this particular video. Or was it the presentation style that made it so hard for me?
If I ever have a basic understanding of legacy BIOS, UEFI, MBR, and GPT, I will consider myself a superman. I have watched so many videos and read so many articles, and yet no clear understanding...
Edit:
Well, I came back to this video about one year later. To my surprise, I understood everything. Looks like all hours studying Software Development and computer related topics helped me. However, I will never be a Super Man 😊
This is actually the very first time commenting on a video or any other web content for that matter. Since I'm currently trying to get a hold of the boot process (specifically the Linux boot process), I wanted to thank you for the great information and the way you laid it out with the accurate terminology for the subject.
Nice Video.Chris Can you make a video how to use linux using secure boot using 1/2 methods using Shim or using signed bootloader
I absolutely hate secure boot and avoid it like the plague. Linux distros don't do a great job with it and messes up the signing sometimes when updating grub.
@@ChrisTitusTech This is incorrect Mr. Chris. I have some scripts that automate the process that I made myself based on instructions I found at:
www.rodsbooks.com/efi-bootloaders/controlling-sb.html
Thank you Mr. Chris. I am a big fan of your channel. I think other UA-camrs should start watching your channel, and make it easier for the general public to follow and understand those issues.
I -- personally -- appreciate the conciseness of your videos. However, I would consider myself a semi-advanced user.
As for Windows 10 afaik, when creating the partitions for the system, you should see four of them for UEFI and two for Legacy BIOS.
I've noticed some of my installs of W10 Pro have 3 partitions, some 4. The PC I'm using right now had an SSD with 3 partitions. It is a UEFI BIOS as reported in msinfo32.
A few good points, but rambling and confusing. Clearly done off-the-cuff, and it doesn't come out well. The problem is you probably understand some of it but haven't collected your ideas in order, nor thought about the assumptions you take for granted every day, so you don't bother to tell viewers about them, and those assumptions are about really, really fundamental stuff. Not talking in circles--that would be much clearer. This is more like talking in a bag of multicolored twine that 3 crazed kittens got into. No structure and no points to be covered.
By the way, I run windows 11, Ubuntu and MacOS. As much as I hate the Apple tax, I have to say, they do a lot of things right. Everyday I ask why doesn’t windows it Linux do this? Thanks for UEFI video. Great stuff.
whenever I try to change to uefi in my bios, I only get a beeping sound and my operating system doesn't load. Im using a gpt disk and my installer is on a partition in my second drive which is also gpt. I figure I need to make my installer boot into uefi but I have no idea how.
It's as clear as mud now.
Haha, Yup! UEFI is hard to wrap your brain around. Here is a diagram from another comment:
*BIOS* (Legacy or UEFI) >>> *Bootloader* (Legacy or UEFI) >>> *Installation Media* (Can ONLY install the TYPE of system it is BOOTED from)
@@ChrisTitusTech You didn't mention a single thing about using the UEFI. You just waffled for 11 minutes about hard disks and their partition tables. I want to know what each option in the UEFI does. At least the old BIOS would give you a description of what each function did whereas the UEFI tells you nothing and even Google doesn't have a clue.
@@serge5046 Thanks I'll check it out.
@@leepshin Those options change depending on your motherboard. UEFI is just a framework, not a specifically designed BIOS.
Can I install Windows on one drive and Linux on second without grub, and just boot pressing f11 (on my motherboard) for boot menu? Can I do that with uefi and legacy?
Yes. You should be able to modify Microsoft's bootmgr using EasyBCD. There is some free version floating around but I just noticed they just started charging for it.
You could but it's better to install grub and launch windows or linux from it.
UEFI is all fine I guess, but I still kinda wish for the world where (Sun's) OpenBoot/OpenFirmWare had be adapted as BIOS replacement
I’m still not clear on something: if I have a windows 10 pc which is installed as UEFI, I can’t seem to boot from an MBR usb drive (a Hirens boot cd or something). The bios just doesn’t want to recognize the usb drive. Is that a limitation of the bios? Something enforced by windows? Or user error on my part?
Oops. I noticed I have installed me a legacy system. I think when I saw UEFI in the bios setup and didn't know what it is, I simply decided to live without it.
Now should I really repartition my system drive and start over? Did I make a grave mistake?
Why do you want UEFI? For graphics and a few seconds shaved off your boot?
I've done a live migration of Legacy to UEFI on an MBR drive. Here is the procedure to follow:
gparted (make 300MB of space at the start of your MBR drive ) Apply *Note: This will take a LONG time and must be done from a live CD*
cfdisk (make new ef00 partition (EFI) in the space of the drive and mark bootable then write changes )
format new partition mkfs.fat -F32 /dev/sdxY
mv /boot to /oldboot
mkdir /boot
mkdir /boot/efi
mount new partition to /boot/efi
install bootloader (remember in the video I said to do this you MUST boot from a UEFI enabled installation media) $ grub-install
on success make sure to modify fstab so the new partition always mounts to /boot/efi
reboot
*BACKUP ALL DATA PRIOR TO ATTEMPTING THIS!*
@@ChrisTitusTech : That was my question: Should I switch to UEFI? If the answer is that the boot shaves a couple seconds only off the boot time and it looks prettier and nothing else, I won't do it. I'm not watching the screen during the boot, I almost always do something else, like load up my coffee pot or something like that.
I guess there is no compelling reason to go to all that trouble for so little benefit.
Thank you for your advise, though. I hope someone will benefit from it. Even the lazy bugger that's me finds interest in doing something new, once in a great while.
@@OldieBugger There is no reason to use UEFI unless you want to. If your system is installed and working, it is fine the way it is.
@@eznix , Yes. That seems to be the case. Maybe I'll use UEFI when I build my next computer. But that's not gonna happen very soon (x-ing fingers), my 10-ish years old gaming PC works pretty well still.
@@OldieBugger I really wouldn't worry about it. You can switch if you need to reinstall in the future.
I had problems with uefi using linspire so I used volume groups to boot 4tb filesystem on mbr 6x 600gb 2x 146gb hdds
Well from what I remember, whatever GPT Partitions you create for Multiboot Windows 7 Linux OSs, you get jacked right in the beginning with Windows 7 REFUSING to install without going into MBR NTFS CONVERSION, regardless of DVD or USB with add files for UEFI GPT etc installation media, thereby F'ing up WHATEVER Installation SETUPS you had in MIND!
Oh Trust Me I Tried and Almost Died! Yeah Tough when trying to work on Laptops Mobiles when illegal hacking being DONE INTERNET SABOTAGE 24X7 to COVER UP #PEDOGATE #POLITICALCOUP GUINNESS WORLD RECORD CRIMINAL CONSPIRACY CASES & EVIDENCE WITH MY BABY HELD HOSTAGE FOR BLACKMAIL 5 YEARS 3 MONTHS UNHEARD OF IN LEGAL&JUDICIAL HISTORY🇮🇳🌍!
Thanks for the detailed information. I learned I can install Windows 10 on a 1 TB SSB in Legacy mode. Easy Enough. Keep It Simple!
Thanks for the video!
I'm curious, we generally use MSI or ASUS motherboads and the same for Nvidia GPUs.
What is common in the USA / UK / Europe / India and other parts of the world?
So flair I candy and mouse AND it makes it so a person can not go up to a computer and stick a flash drive in and boot to the system and hijack the OS by booting to a flash. UEFI prevents this from happening. I have to get permission from windows to boot when its UEFI. What I gather is UEFI makes it harder for me to boot to a flash drive. Good for security bad for me. I like legacy boot because I do not have to tinker to get it to boot to a flash drive. I would much rather use a legacy boot. So I gather now as well that you believe a 6T drive can boot up and be read when the bios is set to boot in legacy mode. I am still confused however why a USB flash has to be UEFI ? only for booting purposes. I am glad to have it verified that I can use legacy boot- with GPT
hello thank you so much, yes a lot off peopel make a chanel you tube and do not not about what they talk and make ununderstanding peopel that is dangerous from youtube because pupularity money and thinking about how to transfer a good science, and some youtuber are just take information from another and try do like a scientist explainatio but wrong information !!!!! why they do !! i do not understand in it;
i have MSI, and bios UFI, and disk in MBR, and 1t nvme !!!
and i hear a lot of said if you need EFI you need have a GPT !? when i see my coputer is not true cause my disk partition table is on MBR basic boot !!
What wronf with that peopel they give a not goof information !!! i do not understand it thank you a lot of you vidéo and make sure peopel are understanding it !
UFI no have any concideration of capacity, because if you systeme files are fat 32 it will use 4 Go ( if i remember) even you have 5To aven you are in UEFI and GPT !!! no ?
If i said something wrong i am sorry with it and tell me where i am wrong for learning more !!! thank you again a lot.
how i can you that comand n windows please ?
My Motherboard GA-P45T-ES3G - Gigabyte (BIOS Version/Date ,Award Software International, Inc. F1, 2/23/2011) Can i updated From legacy to uefi ?
Thx for sharing.
I find this all academic if you don't have a bootable system. No OS found is not something that supports Apt Get nor running any kind of anything.
Have you got anything that tells how to troubleshoot a non-bootable system ?
Again, thx for sharing.
I have a modern PC now (AMD B450 platform; my last PC was 10 years old) and while all of my PCs have supported UEFI boot, i haven't made use of it due to some dicey experiences i had. Like an older laptop i have will insist on also enabling secure boot when UEFI boot is enabled, which means i can't load my own drivers into the Linux kernel, or at least i couldn't figure it out back then. Not nice when i'm trying to patch up a buggy driver for obscure long forgotten hardware or considering i have NVidia GPUs in every PC including that very laptop. And no i don't need a lecture on how i should be buying AMD GPUs, i have my reasons. So i'm using CSM boot and MBR disk.
Now i'm finding that a number of options in the BIOS setup disable CSM, such as resizeable BAR (not supported by my GPU anyway, but will be by the next one) and "Above 4G decoding", so it seems like UEFI is the strongly preferred way now and i should probably stop resisting, at least on this main PC. The real question is how to make it all work for me, and this is what i want to know, rather than nitpicking someone else's videos. I'm dual booting Windows and Linux. CSM also apparently receives less attention, like MSI published and then nuked a beta BIOS update just a couple weeks ago which completely broke on GPUs which don't have a UEFI compatible option ROM.
You say these things are separate, and yet, at least for Windows, MBR system disk and legacy boot, and UEFI boot with GPT system disk are the only two supported configurations, things are just apparently hardwired that way. One of these, it just makes sense, since legacy boot requires 8086 bootsector code, and 512 bytes of code is a little too puny to parse GPT. GPT is supposed to be parsed by the UEFI code provided by the system firmware, but that's 32-bit/64-bit code. Also it would be nice if when i reset the CMOS on the mainboard, i still get the system to boot, while CSM requires a bunch of configuration changes in the BIOS.
Also i am just not confident that i can recover from failures. Legacy boot, i understand the boot and can rebuild the boot by hand if i have to, i could even if i have nothing but a hex editor on hand, UEFI just makes my brain melt.
BTW the laptop and a number of old AM3 mainboards i have, all of them have UEFI boot, oldest of these is from 2009, neither of these have a graphical BIOS Setup so... one doesn't have to do with the other?
the golden piece of info here is that: if you want to install UEFI you MUST boot from USB as UEFI
BIOS being BASIC INPUT OUTPUT SOURCE or SCREEN??? I went to school for computer stuff-- but YOU weren't even born then-- and the one I learned on--- is in the SMITHSONIAN...(no joke)
Well.. i just recently learnt that to be able to boot with a brand new flashy NVMe PCie (4.0 soon..)... you DO need UEFI (and then GPT partition scheme/install).. legacy bios just don't know/recognize natively boot devices on PCIe (they can recognize NVMe boot drives in sata mode only though).. is that true ? if so, well.. that would be a major reason for me to try and test that new UEFI thingy right now then..on a brand new motherboard (x570 style , for the new NVMe pcies 4.0 later..)..formatting windows uefi/gpt on a classic ssd boot right now..just to prepare and make easier a quick clonage to a 4.0 boot nvme later..all in uefi/gpt for the future nvme (same os cloned).. that would be my main reason right now.. is that right?
I think Twilight Spakle (a few comments below) may be on to something. I am still so confused. Furthermore, I am smart enough and more than capable of understanding this stuff. I started my life by changing MFM Partition tables in DOS Debug with Hex Codes. But I just upgraded from my old Win 7 rig to a NEW Dell laptop. Now I find out I can't duel boot my Win 7 because of UEFI. Still looking for a solution!
I don't know why the linux community - or the Great and Powerful - Grey Beards - would build into the basic Install system - some kind of housekeeping steps. Why don't the installers - clean up the leftovers ? This is some level of mysterious alchemy.
Video had about the same high level info as a number of other UEFI related videoes.
Not even an entry level shallow dive into exactly what UEFI is and how to really make use of it blah blah blah.
I'm still trying to get a better understanding of it.
It's basically what I'd call an alternate bios that has 32 or a 64bit OS that can do more things at boot time.
The most common and only thing I have ever seen it do is NOT require an x86 "real mode" kernel and be able to access modern hardware directly before loading the windows or Linux kernel or kernel drivers.
Such as the FAT32 driver and be able to boot the "pre os" stuff from a FAT32 partition and not depend on the boot sector in an MBR partition or drive.
This barely touches the surface.. next we hav things like the/a UEFI shell which appears to be very powerful and is frequently either loaded from a FAT32 partition on a drive or from the onboard firmware itself on some devices.
Cheers, you are still miles ahead and beyond my skills, I am barely getting started. and way behind so to speak.
If you look at my UA-cam Channel you can experience tot total lameness yourself!
I'm considering working to get better at it.
I think you're wasting your time talking about privacy. You want privacy, stop using devices connected to the internet/phone lines. As far as pricing is concerned, it is simply supply and demand. There's been hype around Apple since Steve Jobs came back to Apple. It's simply because of the way Apple sells its products. There is also a certain hypocrisy in your community of UA-camrs/Influencers. You all have an iPhone. No matter what you say, you like the Apple ecosystem.
this is not a clear explanation at mr Chris. you go over what it is to quick, saying its 3 things bla bla, but not explaining what EUFI is. on the other hand its you tube and your not a real teacher otherwise you would have failed your class and no student knew what EUFI is. This video clearly doesnt add much to clearify the mystery around EUFI
Unified Extensible Firmware Interface (UEFI) is essentially a tiny operating system that runs on top of the PC's firmware, and it can do a lot more than a BIOS. It may be stored in flash memory on the motherboard, or it may be loaded from a hard drive or network share at boot. Different PCs with UEFI will have different interfaces and features.
UEFI can (in addition to what a BIOS can): Boot from disks larger than 2TB using GPT (assuming the operating system supports both). Provide the user with a graphical user interface which is easier to use than old terminal user interfaces of BIOS. Provide support for mouse devices (BIOS can rarely do this).
Even more in depth: en.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface IT EVEN HAS PICTURES Esra )
regarding using UEFI for windows. just open > system information app in windows 10 and on the first screen that you see move down and you see BIOS Mode and BIOS or EUFI
If it says UEFI, your in EUFI mode :), you should just google if you dont know something. but you dont use windows and spend to much time getting linux to work so you dont have to to just google since windows just works :) , so you dont need to spend days configuring and typing with linux to be productive, cos if you install linux, you still have like 50% of a OS that takes a long time to setup so you can be productive. With windows, you install it, drink a cup of coffee and its done, you log in a there you go. just install some applications and you up and running :)
This is wrong. Here is how you properly use UEFI:
Step 1: Disable UEFI, use legacy boot.
Step 2: Make sure you have selected a distro that doesn't use Systemd.
Step 3: If above doesn't work, print all 3000 pages of the UEFI spec, burn them, and force-feed the ashes to bill gates.
Do I want GPT, UEFI=FAT32 or do I JUST WANT THE MOTHERBOARD TO DETECT MY GOSH DARN USB AS UEFI BOOTABLE! Only Legacy pops up as an option for the USB. Why is my PC's UEFI system inherently having this problem in the first place? I've made the perfect NVMe Windows 7 USB drive and I find my PC is having DETECTING BOOT PROBLEMS!
Hi, I installed Linux Lite 5.0 on my 10 year old dell studi 1555 (core 2 duo) and erased the windows 7 it came with.. now i thought of dual booting windows 10 with linux. I formatted my drive to NTFS using live linux boot and tried installing windows 10 ISO through bootable USB but on trying to boot from USB to install win 10 it gave me an *ERROR: Non-SYstem Disk or disk error. *. what should i do? I can boot into Linux live boot though but i need windows installed in dual boot
The main problem with this video is that you have confused legacy boot and ancient BIOS implementation which could not boot GPT thus could only be used with drivers that were less than 2.2TB, a few motherboard vendors had utilities to boot larger drives. This is however old LGA 775 & AM2+ days. Legacy boot and legacy bios ARE very different. Test it yourself and install Windows on a 4TB HDD natively on a Core2, x58 or older computer. I had to use this to make windows bootable www.gigabyte.com/microsite/276/3tb.html
That is a clear sign that UEFI is broken. It should be simple. It's not. I should be able to do it myself without a super technical and secretive manual. Instead, I'm treated like the enemy, ... like the one who is trying to break into and scam the system. It's my machine, remember. I should be able to make it boot into what I want to and I should be able to make the screen say what I want. It should be simple, clear, and I should be the trusted person, not some tech who doesn't know me. Me! It's my money. I'm in charge on my machine.
1:33 when it has a mouse you know it's Uefi"... lol. I remember BIOSes from the 90s, some had mouse control and nice graphics mode.
Cloning software doesn't help check for GPT so you clone 1tb nvme GPT to 1tb nvme MBR it says yea ok, then you gotta use GPT2MBR if you wanna change it lots of users are not fluent in these security requirements from Win11 an boot loaders setting up thier drives
Let me see if I understand this. I have an old Lenovo W510 laptop with a BIOS that is Supervisor locked. Still I installed Ubuntu 19.10 in one partition and 20.04 in yet another partition. It has no entries in the BIOS for UEFI. What I understand from your video, I could have installed Ubuntu and let the installation process build a gpt boot partition to boot from instead of the MBR. Is this correct? AND, would the Ubuntu install process create for me a graphical UEFI where I can make the changes that I would normally do with the legacy BIOS?
Also, would this gpt / UEFI give me a "Safe Boot" switch?
To me UEFI is just another layer of complications. If you want to buy a laptop, how can you make sure it can boot into a non-Windows OS? Apparently some OEMs lock out users from secureboot and thereby prevent them to boot into an other OS... Some UEFIs support remote diagnostics and repair. Good idea? I like the legacy bios because it's kept minimalistic.
tech.slashdot.org/story/15/03/20/2039251/oems-allowed-to-lock-secure-boot-in-windows-10-computers
My good its so boring, sorry Chris, ill try not to comment, has been fixing boot issues about a month ago for a whole 2 weekends with almost nothing else to do. :) keep up the good work, ill leave this video for people that like this kind of torture, by the way what about a new drunken install video, NOW IS THE TIME?
1:59 Talks about installing an OS. Then talks about "installing a EUFI". Dude I've been in computing since 1979 and am already going "Why can't he explain this?"
There's only one thing missing from this video. Future Chris's Christmas tree at 8:05 🎄
Some very modern systems won't boot anything but UEFI. My Asus UX534 for example. There's no point in booting legacy except for some Linux distros. I'm a Windows user (unfortunately) so this doesn't really affect me.
my HP laptop the radio program is in dos so I need freedos on the usb stick but the hp does not see the usb it only sees UEFI SO I NEED TO FIND A WAY to put freedos and the radio software onto usb stick any help would be great thank you
Is there a something about how to install Clover bootloader on a legacy only BIOS and use the UEFI emulation of Clover to boot to a GPT disk?
well which progam will confirm the status of GPT (W10) user.? I continue to have boot failure without any changes to the drive settings. Is it W10 or bios program related?
the pain between my ears is so great.
i was so thankful when linux came out with this real neat iso that you could burn on cd then zippity doo dah next thing you were up and running.
then the next puter bought i started reading about uefi.
i felt like a chimpazee in the middle of bios.
i avoid bios still, haven't had any troubles, don't want any, but at least i'm not afraid of the main behind the curtain.
Does one need to use uefi on a laptop that uses uefi if they want to change their boot order? If so the title of this video needs to be changed IMO. There is actually nothing at all that I can see that SHOWS HOW to use uefi. I guess the title worked to get you 115k views but did you actually show ANYONE how to use uefi ?
Jesus Christ, UEFI is such a pain in the ass. Before I had Windows installed on an MBR formatted drive and so windows was in legacy mode. I could add, delete, rename, and rearrange boot entries however I wanted. But a couple of months ago I got an SSD and decided to go GPT this time and I regret it so much. I've been trying for hours and I just cannot add a boot entey to the bootloader. The bootloader order is so confusing, it lists the hard drive as a whole together with the entries which point to a part of it together and you just can't create an entry yourself. There aren't any good third party programs either
so i have an hp7-1205 and it says im in legacy mode ... i need to switch to uefi for it to read my graphics card ! all the videos are so confusing can you make a simple one . ive tried the automatic way from hp support but says no drivers for my pc when i look it up... how do i do it manually
best thing of UEFI Boot u could show how to setup UEFI Shell for Booting ISO´s from your Hard Drive ;-) i would love it
Does anyone know - if I set up a boot drive w UEFI and system is UEFI mode, can I still read and use my old hardrives as is (that were from 2011)?
In the example videos you show is obvious that these people use Google to attain their knowledge so they're not familiar with the technicality for the most part. Even "Papa Linus" who is one of the older youtube "celebrities" & is known with PC content makes rookie mistakes in his videos. Google is not=knowledge, you need experience for that.
HAHA im searching something like Wiki UEFI here in youtube and i found YOU haha.. Thanks
Does HM65 motherboard support UEFI?
Some said yes while others said no.
I can't find uefi settings in BIOS
i am so hot and pissed all i want to do is boot into freedos and i cant!!!!!ihate and would rather use bios it was so simple!!!!!!
I can pull up the directories but not the files or file name!!!!!!!!!!
cant get the answers i need .I even had a disk image of dos 6.22 which works geat but the new system bites
Maybe you should have started by explaining WTF "BIOS" is. Because it's a real shit term, for the degenerate Intel based machines.
when using
sudo apt-get install efibootmgr
i get returned "EFI variables are not supported on this system." on kali 2020.3
The greatest advantage of using UEFI for me is ability to have multiple bootloaders on same hard drive.
Or separate bootloaders on multiple drives 🤔
@@broken1965 Is it question? UEFI allows for having have multiple bootloaders on same hard drive and for separate bootloaders on multiple drives.
This is my issue I am not installing Ubuntu MATE from windows. The system has no system and it does have UEFI. I have tried legacy installation and my hard drive didn't see it.
wait so my thumb drive needs to be GPT and not MBR? i thought this was supposed to be easier. this is insanely confusing.
I like your videos a lot. This one your explanation doesn't seem that great IMO. Thanks for trying.
PC is kind of sad, bigger hard disk more junks, that is only for the useless purpose, fancy menu, decrease boot time?? more secure ???
Mhh, my "gygabite z97x-ud3h/pentium5 as UEFI but do not boot at all, so, GrubPC is my boot...