My personal recommendation concerning OS development is xv6: https://pdos.csail.mit.edu/6.828/2016/xv6.html https://pdos.csail.mit.edu/6.828/2016/xv6.html Prin

My personal recommendation concerning OS development is xv6: https://pdos.csail.mit.edu/6.828/2016/xv6.html https://pdos.csail.mit.edu/6.828/2016/xv6.html Printout of important parts of the source code: https://pdos.csail.mit.edu/6.828/2016/xv6/xv6-rev9.pdf https://pdos.csail.mit.edu/6.828/2016/xv6/xv6-rev9.pdf Book: https://pdos.csail.mit.edu/6.828/2016/xv6/book-rev9.pdf https://pdos.csail.mit.edu/6.828/2016/xv6/book-rev9.pdf (both are linked in the menu at the top of the page) Review by John Regehr: http://blog.regehr.org/archives/1114 http://blog.regehr.org/archives/1114 (Github Repositories: > https://github.com/mit-pdos/xv6-public https://github.com/mit-pdos/xv6-public > https://github.com/mit-pdos/xv6-book https://github.com/mit-pdos/xv6-book).