想学内核？
http://www.linux-tutorial.info/modules.php?name=MContent&obj=page&pageid=82
想学写操作系统?
https://stackoverflow.com/questions/43180/what-are-some-resources-for-getting-started-in-operating-system-development
http://minix1.woodhull.com/http://www.osdever.net/tutorials/
需要讨论的具体细节问题，请留言。