os01 VS sample-os

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

Looks really good so far!

Also, I would point out that (at least at this point in time), most of the OS code is here:

https://github.com/tuhdo/sample-os

One other thing:

The following file; the book's text, in text file format, would be one really great resource to have locally, on the machine that someone develops OS'es on, especially if they didn't have Internet access -- due to the fact it is very information rich, and all of that information fits neatly into a single, simple, platform-agnostic text file:

https://github.com/tuhdo/os01/blob/master/book_src/Operating...

So, nicely done!