os01 VS os-tutorial

Write an OS from scratch

(Here is the link - didn't quite get the image/link combo right in the original post!). I'm writing a series of posts about coding your own operating system. After reading Operating Systems: From 0 to 1 I found that some of the code does not work, so this first post walks you through writing a bootloader similar to that of chapter 7. It also adds some context that I would have found useful when I originally read the book, such as how 16-bit real mode works and some assembly programming information. I'm hoping to take a different approach to posts in the series by borrowing pieces of other operating systems and discussing how they are implemented in an effort to keep things simple and focus on fundamentals (even Linus started out with a detailed reading of MINIX).

Starting a series about writing your own operating system. After reading Operating Systems: From 0 to 1 I found that some of the code does not work, so this first post walks you through writing a bootloader similar to that of chapter 7. I'm hoping to take a different approach to posts in the series by borrowing pieces of other operating systems (even Linus started out with a detailed reading of MINIX).

Very quickly skimming through the various chapters, it appears that this is gentle introduction as attention has been made on clear and verbose explanations, supplemented with diagrams. Comparable other "courses" could be osdev101 [1] and "Writing an operating system from scratch" [2].

[1] https://github.com/tuhdo/os01/blob/master/Operating_Systems_...

[2] https://www.cs.bham.ac.uk/~exr/lectures/opsys/10_11/lectures...

You need to be aware of how it works on a hardware level but probably not an expert, for a better explanation see: https://github.com/tuhdo/os01

Operating Systems from 0 to 1

How to create an OS from scratch

My dude. Your functions have exactly the same names as his. Copying it from a different tutorial based on James Molloy's tutorial does not make it any less James Molloy's code.

I started out with this tutorial: https://github.com/cfenollosa/os-tutorial. It doesn't get you too far but it explains the basics very well, so check it out. After that I looked up James Molloy's kernel tutorials (look it up on Google, it's all on a website). Be advised that he's got a bunch of errors and bugs in the tutorial, there is a whole page on it on the osdev wiki titled known bugs in the JamesM kernel all something like that, but it's still great and gets you pretty far. After that, I chose to develop a FAT32 driver on my own, I can link some sources or my own code for you as well, but it's really up to you to follow what you like. I also found a great youtube series (https://youtube.com/@poncho2364?feature=share9), check out his osdev series, he also has some cool stuff there. And as I said, good luck on your journey and you can ask me in a DM as well if you get stuck somewhere!

tutorial : here

Yeah, I'm following cfenollosa's OS tutorial for guidance. You mentioned that you've seen the same code, with the same bug? What was the solution there?

hey, just in case you actually want to write an operating system, you should check out cfenollosa/os-tutorial: How to create an OS from scratch, it is an amazing tutorial that will get you from basic printing all the way to a command line interface!

You might be able to sink your teeth into something like this if you're interested in real os development, haven't got far myself but it's fun and you'll learn a lot https://github.com/cfenollosa/os-tutorial

So I made a 16-bit x86 toy OS in pure assembly. 3 months ago, I found a very fun tutorial on github that is about Operating system development. I read the first few chapter and from there I made a very simple, extensible (?) toy operating system that could run on hardware (yes, it is madness).