You're going to need to do a lot more reading. Even just looking up the interrupts you need is a task. I've found nothign that does a good job explaining the 1, 2, and 3s of how to get all the way to booting from a formated disk.
There is unlikely to be a single thorough body of documentation on this sort of thing. IMHO, the best resource would be the numerous open source bootloaders that are available.
There is unlikely to be a single thorough body of documentation on this sort of thing. IMHO, the best resource would be the numerous open source bootloaders that are available.