Building an OS - 1 - Hello world 

"so far our operating system does nothing and does it perfectly" top tier programming here

This is the most complete video I've ever seen on building an OS. Thank you, sir! Don't stop, please

loved this! back in 1985 i built an 8-bit z80 computer on breadboard (with a 1k static-ram chip) and had to program the RAM chip using 8 dip-switches (no assember) just in pure binary! it took hours to write code similar to this. after writing the binary code to RAM, i would then send a signal to the RES pin on the CPU to begin the instruction pointer (IP) at zero and begin execution of the code. all i had was an array of 8 led's as my output display. the code I wrote made the led's flash from left to right and vice versa, amazing days! this brings it all back! 😊 ps. i had to clock the z80 cpu at only 1 instruction per second (1hz) to be able to see the led lights move and the z80 assembly for that code was something like: l0: ld b,7 ld a,128 l1: out 0,a rra djnz l1 ld b,7 l2: rla out 0,a djnz l2 jp l0 (program size was just 21 bytes lol!)

What a fantastic series of videos, they really tickle my tech curiousity. Everything I've been puzzled by is explained so well. Thank you for making these

it's really rare to find quality videos in this topic. Thank you sir for this excellent demo 🙏

This is brilliant. All the other tutorials are messy file trees, horrible code, and hard to follow. This is perfect, easy to do, and the teacher is great. Keep going dude!

If anything RU-vid does good from time to time, is that he suggested this to me. I highly valuate this type of content, and as a developer and a lover of coding I have a big respect to this type of talented people, its way out of my league to do such things, even that like 25 years ago when started coding using basic 1, I had such ideas 😅, now you know the life took me, and have to pay the bills so I am a web dev, thankfully I am still in the coding family. Big love and respect bro ❤

Absolutely adding this to the study list. I feel like this would probably be a great reference for delving further into CompSci

just discovered this series , need to binge watch that now. This is so cool

i can say nothing more about this video other the "its perfect", the best OSDev tutorial i've seen yet. AMAZING

Excellent Tutorial. I love how you explain everything you are doing, this is a much better tutorial then any of the others I have seen!

I can already see that this is going to be easy with this tutorial! PLEASE DON'T STOP, KEEP UP THE GOOD WORK!

this video would have saved me days of research if i knew it before i got into operating systems. Very consise and coherent, 10/10

Amazing video, I managed to follow along, and I even learned some more asm. I have always been kind annoyed with there being very few resources online for learning asm, so I barely know any, so nice to finally find a good resource.

Nice video... Looking forward to see how this progresses... Made 4 yrs ago, I'll check your channel for other updates... Thanks for the start. 👌

This is a wonderful video, friend! Thank you for doing these videos, I'm loving them!

This is gold , Thank you for the efforts

You explained the most complicated subject like it's a piece of cake. Hats off to you man !! This video deserves millions of likes ☘☘

That is the most complex "Hello, World" tutorial I've ever seen. Thank you for that

Randomly youtube recommended me this video. I wont try to build an OS but I always wondered how it works, thank you

That is one of the best tutorials of a complex subject I have ever watched. Kudos! 👏

Thank you for making this tutorial. Now I learned a lot of things that will be useful for me

the title is literally the content of the the video, you are amazing :) , dont stop never

This made me actually understand kind of how an is works and I already have an idea of how a kernel works too

This is the perfect level of explanation for me, thanks!

I'm literally into tears 😭 ... Overwhelmed by grateful emotions ☺️😌 ... Can't believe you put it for free on RU-vid! Thank You man, I can't thank you enough... !❣️🙏🏾🙏🏾

It's really good to see people having fun with Assembly like this. I know we live in the age of languages like Python and Assembly can be a frustrating, painfully slow, counterintuitive language at times that tests your patience and confidence when things don't work, but I think everyone who enjoys programming should learn to work with at least one instruction set and experiment with it like this. Just mess around, play with it. At the end of the day we're just kids playing with really complicated toys and making them do tricks when we program anyway.

this video is really good i never seen a complete video like this

I love this, please keep doing this kind of tutorial

Cool Thank you so much you are the best person who has explained assembly:)

Hi! I thought this was great! I hope you'll make more some day. All the best from a fellow programmer(mostly c# :))!

This is truly fascinating tutorial, congratulation

YOU ARE A LEGEND ONLY THIS ONE WORKED PERFECTLY!!!!! THANK YOU!!!!

Absolutely amazing video! Thank you loads!

this probably needed so much work thanks for the effort!

The best video for begginers about this topic!! Excellent!

Thank you VERY much for this series. I have mentioned wanting to get into OS design many times on other programming groups and been laughed at and mocked because why am I not in the kitchen making dinner lol. I've been writing in C and recently learning assembly, so now I will go back to them with an OS (after a few more years of this).

A stack is LIFO (last-in-first-out), not FIFO. The FIFO equivalent is called a queue.

This is awesome. I watch it, and get like 50% of it. Then I search for while and I understand it more. But it was till I start building my own floppy disk OS bootloader to understand it on 100% Thank you very much for this. It made me eager to learn more!

Best for creating os. Please do more videos!

Thank you so much for these videos!!

I really enjoy technical low-level programming projects that present the necessary theory and definitions. I hope to see you building a compiler for a toy language from scratch one day. Or a webbrowser :)

Hey Nanobyte, you are one of the best and most underrated OSDev channels on RU-vid! You even inspired me to create a OSDev channel. Just need to find a easy to use video editor and it's done! BTW I am a Legacy BIOS Windows 10 user (and I will change to Linux in 2025)

This is great, thanks for teaching us. I thought it would have been funny if you used nano to build your os

Wow amazing tutorials, I have previously written assembly bootloaders and a basic operating system more like a shell tbh and no one really explained about the syntax of certain assembly things like $ and $$, I knew I could jump to $ for a hlt but never what the $ - $$ did in the times loop and now I do!

Terry Davis would be proud. Now everyone can homebrew their own temple OS.

Thanks a lot sir, amazing explaination

Greatest stuff that i seen ever, man, continue plea

I've been searching for ages to find something like this

That was amazing man!

This channel is amazing. Keep the great work, mate!

Thanks so much for these videos!

Great video, thank you. Subscribed!

6:50 fire voice crack 🔥🔥

Well structure. Thank you very much

Rollercoaster Tycoon 2 was written entirely in Assembler. I cant even imagine how much work the guy put in this to make it happen.

waiting for the next video !!!!

Thanks! That made good sense.

Thats's fck'n awesome, i'm writting a compiler and the video is sooooo usefull

Thank you for this!

truly brilliant !

I like this guy, he hesitates and still gets it wrong (13:29), but all in all good tutorial

just amazing

Badass dude really badass, this is Bill Gates level of making an OS. I will be looking forward to this. I am an Windows and Linux user so i play around with virtual machines so this should come out simple for me. Can't wait to make my own OS

Great video, thank you very much :)

Good videos don't get old

cool videos thank you for the information

Very easy to follow instructions and explanations. One factual error: a stack is a LIFO not a FIFO.

wow i just found this its awesome .

The best Tutorial guy!

This is so cool!

Wow, everything in 23 minutes, it took me several days, weeks, to find info and figure out how to create a bootloader exactly like this 17 years ago in the 2000s internet

brooooo really thanksssss keep going

Finally, someone who appreciates micro. I absolutely love it.

Very underrated

The best youtube channel ❤❤

its pure information, tnx u

Great Video

When using VMware, it's actually faster to use PXE than going all the way to using floppy images, you just make an empty VM with a network card and you setup your Ubuntu as a BootP server + NFS server (in the old Sun style). From there, just reboot the VM, everything else is automatic, you can jump to 64-bit mode much earlier, even before you display anything. By the way, ISO images are also easy to generate and somewhat more "portable" than floppy images.

Quality overview

very informative

Thank You very much

great job bellissimo molto interessante

Very good videos dude, congrats! The stack is LIFO Last In First Out not FIFO 😂

This video is gold for people who want to learn something new everyday, but unfortunately we live in a world where a tiktoker easily gets millions of followers but a youtuber hardly gets any recognition.

"so far our operating system does nothing and does it perfectly" wow incredible

This is GOLD

i couldnt get qemu installed on kali purple so i used Virtualbox else everything was GREAT!

just amazing!!!! in 17:11 u mentioned stack as fifo but it should be like LIFO right?

I love you man! Greetings from Serbia.

Do you know how you could load this onto a usb and have it working on bare metal? I tried on linux using dd command, it does find boot sector but no string prints

I actually followed this tutorial on android😂 Excellent tutorial 👍❤

I was sent here by a link in a comment written by someone named Tomi Ivaswort. I have no idea who you are, but I just want to say, thanks for that link.

17:04 *LIFO (Last In First Out). The FIFO is more for stream actions.

These video are very useful to develop an OS. However, could you make video about making OS on arm/arm64 architecture ? It might be interesting because of the RISC Architecture. Thank you so much for these videos !!!

This tutorials are really awesome ! i just wanted to ask, is knowledge of Data structures and Algorithms are necessary for building an OS

seems good. although, in diagram @9:29, i don't remember index registers (si,di), bp, sp, having a 8bit half counetrpart, they are 16bit only.

small correction about 7:11, the bios is actually looking for the bytes 55 AA, not AA 55

im your 700th sub!!

Nice