Looks like you haven't even started thinking about the problems you'll run into architecting the actual mechanisms and policies of the operating system; process

Looks like you haven't even started thinking about the problems you'll run into architecting the actual mechanisms and policies of the operating system; process scheduling, virtual memory, etc. That's probably for the better—one thing at a time. For when you do get to that stage, I recommend Operating Systems: Three Easy Pieces. http://pages.cs.wisc.edu/~remzi/OSTEP/ http://pages.cs.wisc.edu/~remzi/OSTEP/