How does an OS boot? //Source Dive// 001
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- Опубліковано 8 вер 2023
- In this installment of //Source Dive//, we're learning about the xv6 Operating System; Specifically the low-level boot code that gets the CPU in the correct state to run the OS!
=[ 🔗 Links 🔗 ]=
🐋 RISC-V Docker Image: github.com/francisrstokes/rv-...
🎥 Series Playlist:
🗣 Discord: / discord
⭐️ Patreon: / lowleveljavascript
💻 Github Repo: github.com/mit-pdos/xv6-riscv
The UA-cam algorithm just landed me into a gold mine, this is pure computer science heaven ❤
True
This is gold . Link to the other gold ones you ran into ?
It's very difficult to find such amazing detailed videos elsewhere. Please continue making them!
and it's even more surprising that YT recommend it. pls continue
totally agree!
@@Turjak_arthow so? It’s got 58k views in 12 days. Sure it’s not millions but how many of us do you think there are that are interested in watching someone review code. Not many I imagaine
@@CloudCoderChapI learn more about code review than reading any other documentation.Lately I feel ike YT is trying to keep us dumb with their recommendations...
@@Turjak_art I think it depends on what else you watch. Like if you watch one random video then it messes up your feed and you just see less educational stuff. I find if you click the three dots and not interested or don’t recommend then it helps. I always forget about the subscriptions list which if you curate then you will only see stuff you want.
The step by step walkthrough explanation of the source code of how an operating system's kernel is bootstrapped from asm to C systems level code through showing how the compiler, assembler, linker, etc. sets up the stack frame, system registers, interrupts, exceptions, privileges, modes is just as good as watching Ben Eater's series on how to build a CPU from discrete logic gates and integrated circuits. Job well done. I'd love to see how far this series will go and where it will end up.
Ben eater ❤
@@zoro.73what UA-cam channel is that??
@@davidbriggs8109 search it up, he goes into basic gates up to 8 bit processor in breadboard
@@davidbriggs8109 it's just named Ben Eater
@@davidbriggs8109 he does a lot of electrical engineering stuff; he has a series where he makes an 8-bit cpu out of logic gates
man this is just absolute gold. To find videos that focus on the right details and with such clarity and simplicity is amazing.
spectacular video, i’m so happy someone actually goes through every single step of the process and doesn’t just describe what’s going on generally
One of the best videos I could've hoped for. I'm super excited for this series, please keep it up!
This is an absolutely fantastic video. I really enjoyed your prior series on building a bootloader, and this scratches that same itch. I've been a professional developer for almost 30 years, but I've never really worked at such a low level, and I find this stuff fascinating. I'm looking forward to the rest of this series, and would love to see the next series tackle adapting this to physical hardware.
I never got the chance of going this deep into CS since I majored in electrical engineering and then transitioned into dev jobs so I've been filling the gaps over the years, I hope you can continue this series sincce there is not a lot of Operating Systems content specially as well explained as this.
I'm currently going the other way around - I've always been firmly planted in the software world, but these days am learning a lot about digital and analog electronics 😄
nice pfp
I just find low level programming extremely fascinating and this was very well-done!
Thank you!
This is so fascinating to get a peak under the hood at what a basic operating system involves. Your explanations are very clear and consise, it makes this a great experience to watch
I absolutely love this clear and concise content for low level stuff which is almost non-existent out there on UA-cam. Props for going through actual code as well. Gold for me as an embedded engineer. Subscribed.
I changed field to Embedded engineering not long ago but unfortunately I normally write app level stuff and only have to deal with low level stuff once in a while. Thinking about preparing myself as an actual embedded engineer who can architect embedded software from scratch so this sort of video is extremely useful for my future career.
This whole video helped me to refresh a lot about my S.O classes. Seeing and understanding how everything is wired up it's so interesting
Please keep doing this kind of content, you explain it in a very clever way!
High quality content, great to see it here. Enjoyed watching and learning. Big thank you for the efforts that went into this!
I agree with the crowd. Such videos (explanation of each line of code)is much more useful than most of related videos available. Thanks!
This video is an absolute gem, my OS classes didn't go that deep and this really filled the void of how things really start.
Man, kudos to you. I've been on youtube for many years trying to find a youtube who knows how to tell a story during a tutorial. I love your approach to explaining how OSs works. You have my sub!
I have never written a line of code, barely seen it, of a operating system in my days, yet I find myself intrigued by your videos. That says alot about your storry telling and knowledge!
This is amazing please don't stop; it is very rare to find such in-depth details for low-level explanation . Thank you
This is absolutely amazing! Thank you! I missed out on building an operating system in college. You made it seem so easy here. And now I have a good reason to use Docker.
What a great video. I never expected to find a resource that covers such low-level systems code in such great detail.
I took two undergrad OS classes that used xv6 and oh boy does this bring back some memories. But they were some of my favorite classes and it’s super cool to see this kind of material on UA-cam. This video was very well explained and I look forward to watching more videos in this series
Did you debugged on the same VM as the speaker? I suppose, it's a bit more painfull, than my Python+Sentry stack? TELL ME MOAR
I took an independent study back in 1980 on something very similar to this. Didn't have any hardware to run it on. Each person had to learn a portion of the code and explain how it worked to the others. I had the start up code. This is fascinating to look at something like this again.
An absolutely fantastic video man. I hope you continue this series! As someone who studied ECE but does EE as a living now, this is so insightful
Outstanding video! I appreciate the depth you've gone into. Keep these coming!
Great video! I really appreciate the emphasis you're putting on understanding code. As someone who's been in the software development field for years, I can vouch for how crucial it is to comprehend different coding styles and logic.
Your videos are not just informative but also incredibly valuable for developers at all levels. Even though I've retired, I can still see the need for these resources in the industry. Keep up the good work! Looking forward to more code reading and review videos from you! 👍😊
Wow, that's what i would call a great first video of a new series. I think your explanations are perfect for people who have basic soft- and hardware knowledge. Will definitely continue watching this series even tho i will never do systems/kernel programming. Thank you for doing this!
finally, long-form detailed content I can actually learn from.
no snappy edits, no doom-y & clickbait titles, no music and fiesta, just learning together.
great video! binging your channel rn.
A really fantastic video, not only great technical theory but also great way of teaching it, thank you for creating it 👍
My bachelor project was implementing an OS. I made a 64-bit version of JOS originating at MIT. There were references to XV6 in there too. This is a spectacular video reminding me a lot of that work. - The structure of this OS is very similar to what I made
Interesting. What was the core of your OS? I keep thinking the bare minimum is managing all the different tasks and allowing communication among them.
@@kayakMike1000 I’m not sure what you mean by the core? It had preemptive multitasking, virtual memory isolation, file systems, copy on write memory and more
Really good video! You explained everything that I didn't know and kept the pace of the video. Looking forward to the next one.
This was super helpful! Please continue doing these. Very inspirational
This is awesome!
Beforehand I already watched Ben Eaters 6502 series and watched/read multiple other sources on how operating systems work. This fills that gap perfectly! Thank you :)
This is superb. Keep making such videos and complete the series please.
Thanks so very much for creating this content. It's exactly what I have been looking for. Your presentation of the topic is informative and interesting. Love It!
One of the most valuable contents on UA-cam! I am very happy to find this content! ❤🙏
This video is exactly what I need to watch. As a beginner, I don’t know where to start, the others I have watched about kernel is either about showing me a whole bunch of assembly to run specially on that processor or about a simple os that does nothing but printing just a line, or about diving deeply into what Linux kernel is doing. I am not say they are wrong, but hey “In operating system project, arguably the first thing you want to do is to get out of assembly as soon as possible”. This is gold! Please continue of what you are doing and you are doing it right!
Installed all the tools on my Macbook Air. And it compiles, builds and runs. Thank you.
I’d love to see more of these!
Absolutely fantastic video! I look forward to watching more content from this channel. Thanks!
great video, looking forward to the rest of this series because it's very time and energy consuming to actually do what you're walking through and explaining. Doing it yourself is a better way to learn but I'm not trying to be able to code an OS, I just find it very interesting to learn how it gets put together and perhaps be more aware. Thanks!
Loved these videos, these are rare content. Keep continuing the good work❤
Im currently doing a course about operation systems at my studys and so much of the theoretical stuff i learned make so much more sense now. its great!
Wacthed from 0:00 to the last second. It is all interesting. Thank you! You make just the right amount of explaining. The need for this kinda content is really big
Very nice video. The format and pace is great
It's so cool to see how this works. It is making me think of projects I want to work on myself!
Man this is awesome, thank you so much for this level of detail in the explanation
Super interesting! thanks for this very detailed deep dive video series, this is very instructive, material like this is hard to find, keep them coming :).
This was a really really good video! Please keep making these.
God bless youtube for recommending this channel.
This channel is a hidden gem. Keep up the good work!
Loved the video, and am excited to watch future ones in the series!
This video gave me material for at least 6 months of study. Thank you very much.
Nice video! I hope you keep the serie running
Amazing content. Is very clarifying. Keep doing it. 💪🏻💪🏻
Fantastic! Would love to see more! Your teaching is also very clear
Very nice. You step through the process as if you are investigating for the first time. Providing your thoughts and steps is very helpful. I don't know if I will ever use this, but it is interesting just the same.
What an Awesome Video, Thanks for putting the time to create such great content.
Fascinating, deeply deeply fascinating, interested for the continuation, keep up the amazing work 👍🏻
Thank you, Please continue this series.
This is really, really good. Please keep making these videos.
Thank you for such awesome content, definitely keep doing them
I took an independent study at Penn State back in (maybe) 1980 and it was likely something quite similar. We each had to learn and discuss a piece of the system we were analyzing. I got the boot up process, so this is quite interesting to me. Thank you.
Great video! I'm a user mode developer, but have always been interested on what's going on the other side of the curtain. This was really well presented and clearly explained. Onwards to part two...
Ooooh, looking forward to the rest of this series 👀
This is briliant! I'm a self-taught Software Engineer working daily with high-level Java / Kotlin web applications, and I've always felt the need to understand what's going on in the lower levels. This series is both very well explained and detailed! Keep it going!
Also I feel this is 'real' programming and what we do in the web dev is just 'riding on the shoulders of giants' ;-)
Thank you, and I'm really glad that you're enjoying it and are curious about the lower levels of the stack. Most of my career was also spent in the Web space, and I hate the attitude that this kind of stuff is out of reach for anyone who isn't a "systems programmer" by trade.
Very clear and informative.
Very good video! I just took a class on operating systems in the spring, and we went through the x86 version of this project. It was a fun class. I really enjoyed building on top of the existing project
What do I think... amazing and very intuitive explanation which is the most important aspect here, thank you.
Great tutorial, I am going to watch a whole series, your explanations are very detailed, clear and understandable (and I am a self-learner with no real background in CS)
A really informative video! Eager to watch the following parts. Thank you
Very good video! Brings back memories. Back in -96, second year in CS studies, we had a group assignment in the OS course. Write a multitasking operating system for a RISC processor. It was a bit overwhelming to say the least.
Seeing it like this, with some experience gained along the way, was both educational and entertaining!
[I get it that this is the boot part of the OS. Another piece of "magic" is, as far as I'm concerned, the thing that happens between power on and the entry point of the OS boot sequence. On actual hardware in particular but also in comparison with virtual hardware. The "oh, I have a docker image doing all that magic here" is to kind of skipping things. For a very good reason too. Still, for a curious mind, a logical next step (at some point) would be "ok now I have tested on a VM, how can I run this (or any smaller OS) on something real?"]
Thanks for this very interesting session, which was even more giving by having the source code downloaded to watch in parallel!
Extremely interesting and well done, Great Work!
absolutely fascinating stuff and brilliantly explained
This is fantastic. I will spin this up and follow along, it's such a good intro! Thank you!!
Very helpful video! Thank you for making this! ❤
This is awesome, I learned so much! Please keep it up :)
real nice explanation, keep up this series!
The content i didn't know i needed!
Love this type of videos ... thanks for doing it
Thanks for creating these videos, I'll learn all of them. It is really hard to find practical knowledge about these concepts! 🙂❤
thank you. this kind of video is really helpful. this really gives an answer to our curious questions which we always had but never able to find any detailed answers maybe due to lack of access to resources. Your video has really helped me in understanding the concept at low level, and you have really explained in a detailed and orgainsed flow with clear explaination. thank you
Very interesting contribution, well done 👍 Keep going 💪
Great, awesome, fantastic, wonderful video! This content is necessary and should be easily available to the world to anyone interested in computers.
All time, All time, All stuff , All videos inside this channel are amazing 😊.
Excellent presentation! I wish there were enough hours in a day for me to watch to all channels I'm interested in.
This is the first video from this channel I'm watching. It hasn't been a minute, I just subscribed to the channel by hearing the topic.
Wow, I loved it! Incredibly clear and detailed without being boring ! Only one suggestion: for the next videos could you increase the resolution to like QHD or 4K? That would be amazing :)
absolutely continue making these
What an amazing video, i love the way you teach!!!
Thankyou for helping me get a better understanding of the logic.🙌🏽
This video is really awesome. Keep making these videos please.
This video is awesome so many things explained in a simple and coherent way. Really hard to ask for everything you don't know and easy to miss one simple jet important piece if you explain it to someone.
Thank you for the great explanation! I have a CS background and work as a software engineer for many years but never had the chance to work on such a low level. I recently read "Operating Systems: Three Easy Pieces" (which is fantastic and can be read freely on the site of the authors) and xv6 was mentioned many times. However, not having the right background I had a hard time understanding the code when I tried to explore it later. This video hits the perfect balance for me of concepts which I know with a new content. I am very interested in seeing the next videos.
Absolutely amazing video! Thank you.
answering your question regarding how useful such sort of videos are: they are useful. At least from a perspective of a guy who is curious about the subject but does not know where to start. Thank you for your work.
you're a legend for making that, legit better than 1000 books
Yes, Most excellent video. I shall watch more of them. Cheers..
Thank you so much! Incredible quality content! Really amazing and incredibly useful!
Thank you very much for this video! Im a Software-Developer for corporate applications mainly in JS/TS/PHP/Python world and i am very keen about this topic for a long time now.
Its very pleasent to have someone with a good knowledge in OS-Development explain how "it" really works. I personally found it hard to find out where to even start and what the order is to get into this topic of OS-Booting, OS-Runtime and interaction between an OS and the code i am writing on a daily basis.
My recommendation section blessed with this video ❤