what program detect the devices at the boottime?

[frederick van tagero]

could anybody tell me the tips?

rdgs,
frederick

[Michael Steele_2]

This will vary from system to system and from version to version of LINUX but falls within the discussion of the "bootup sequence". On a PC for example, the BIOS firmware transitions into the first boot disk record and into the kernel using one of many boot loader programs. So the actual management of devices are done by the kernel via device drivers in the system.map file. There is a transition into the program linuxrc which interacts with init and oversees the startup and shutdown scripts.

Here are some boot loader programs: LILO, GRUB, SYSLINUX or LOADLIN.

linuxrc (* startup and shutdown scripts *)

/etc/init (* determines run levels and orders the daemon process startup *)

system.map (* kernel drivers and parameters *)

kernel (* manages devices *)

rdev (* non tunable kernel parameters *)

[Sergejs Svitnevs]

I've found a very good document "Understanding the Linux boot process".

Check link:
http://www.kevinboone.com/boot.html

Regards,
Sergejs