How does the kernel know what to run after it's done w/ hw?

[no_hope]

Sorry for the lame Subject. My brain's pretty fried from doing homework and running out of space in the subject didn't make it better

I am trying get basic understanding of what happens during system boot-up.

Here's the sequence of events as I understand it. Please comment/correct on what I have and help me figure out the missing pieces.

1. Power on
2. BIOS resets all hardware, does basic hardware checks
3. BIOS looks into MBR on the disk it's configured to boot from and executes something there, let's say it's grub
??? does grub load it's own little "kernel" with drivers for the hard drive, keyboard, video, file system, etc.?
4. Grub reads its config file, sees my bzImage there, unpacks it, loads it somewhere in memory
5. Grub executes some kind of jump instruction which jumps into the kernel. CPU will never see grub instructions that are in memory at that moment again
6. Kernel goes through its initiation routine: loads drivers, initializes data structures, etc
7. Kernel runs some program from the filesystem. Is that the program that prints

[salahx]

2 ways:

Either the kernel runs the program listed on the init= kernel command line, or, if that is absent (which it normally is) run runs one of the hard-coded programs in init/main.c (see you kernel sources in /usr/src/linux, its at the every bottom of that file).

If it cannot find init after exhausting all alternative, the kernel will panic. Init NEVER exitsL: if, for any areason, init dies the kernel will panic. Init is not subject to ptrace(), kill -9, and lots of other stuff, it is "special".