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What is this?
A step-by-step tutorial that walks you through building a small operating system from scratch, starting at the boot sector and moving up to a basic kernel.
A step-by-step tutorial that walks you through building a small operating system from scratch, starting at the boot sector and moving up to a basic kernel.Is this a finished OS or a series of lessons?It is a series of numbered lesson folders, each with its own short README and heavily commented code, building on the previous lesson.
It is a series of numbered lesson folders, each with its own short README and heavily commented code, building on the previous lesson.How do I work through the tutorial?Start with the first folder and go in order: read the folder's README (prerequisites and goals), then study the commented code, then optionally try writing it yourself before looking at the example.
Start with the first folder and go in order: read the folder's README (prerequisites and goals), then study the commented code, then optionally try writing it yourself before looking at the example.What do I need to know before starting?Each lesson's README states required prior concepts up front, and the author expects you to be comfortable with low-level programming and to look things up yourself rather than relying on built-in theory.
Each lesson's README states required prior concepts up front, and the author expects you to be comfortable with low-level programming and to look things up yourself rather than relying on built-in theory.Is this still maintained and up to date?No, the author explicitly flags it as an old, abandoned project with known technical and design issues, and recommends more modern sources for actually learning OS design.
No, the author explicitly flags it as an old, abandoned project with known technical and design issues, and recommends more modern sources for actually learning OS design.What has the tutorial actually built so far?According to the strategy list, it covers booting without GRUB, entering 32-bit mode, jumping from Assembly to C, interrupt handling, screen/keyboard I/O, and a tiny growing libc - all marked DONE.
According to the strategy list, it covers booting without GRUB, entering 32-bit mode, jumping from Assembly to C, interrupt handling, screen/keyboard I/O, and a tiny growing libc - all marked DONE.What topics are planned but not finished?Memory management, a filesystem, a simple shell, user mode, and multiple processes/scheduling are listed as not-yet-done, with a BASIC interpreter, GUI, and networking as stretch goals.
Memory management, a filesystem, a simple shell, user mode, and multiple processes/scheduling are listed as not-yet-done, with a BASIC interpreter, GUI, and networking as stretch goals.Why is there so little theory in the lessons?The author deliberately skips most theory, arguing that excessive theory after college makes OS development seem harder than it is, and expects readers to Google unfamiliar concepts themselves.
The author deliberately skips most theory, arguing that excessive theory after college makes OS development seem harder than it is, and expects readers to Google unfamiliar concepts themselves.Can I continue the project if the author is inactive?Yes, the author invites forks and says they will link a 'main fork' if enough people want to continue development.
Yes, the author invites forks and says they will link a 'main fork' if enough people want to continue development.What are similar projects?lytlnyblOS, linux-insides, os01, How-to-Make-a-Computer-Operating-System, flash-linux0.11-talk, asm-lessons, blog_os, cpu-performance-engineering
lytlnyblOS, linux-insides, os01, How-to-Make-a-Computer-Operating-System, flash-linux0.11-talk, asm-lessons, blog_os, cpu-performance-engineeringWhich topics is it in?boot, assembly, x86, operating-system, kernel, low-level, systems-programming, curriculum, course, computer-science, bsd, beginner-friendly
boot, assembly, x86, operating-system, kernel, low-level, systems-programming, curriculum, course, computer-science, bsd, beginner-friendly