Linux Boot Process

The steps that are required prior to the boot process include (see previous courses):

• P.O.S.T.

• Power On Self-Test
• Core hardware verification and testing
• CMOS verifies its stored settings

• CMOS examines the list of physical devices for the first boot device available with a boot-sector enabled on it (called MBR or Master Boot Record).

• This address contains code to load the O/S kernel or a boot loader to load the O/Ses available to it.

• This loading of the initial kernel O/S code from the physical address given by the CMOS is called the Boot Strap Process.