Being able to easily run and debug a simple operating system can be really useful when you want to learn how low level components are implemented. Xv6 is a very simple Unix-like operating system that allows you to do just that. sillysaurus2 exemplified this in the Hacker News’ thread on Xv6: Have you ever: Wondered how a filesystem can survive a power outage? Wondered how to organize C code? Wondered how memory allocation works? Wondered how memory paging works? Wondered about the differenc...