Linux boot process

In this topic we will discuss indepth of Linux Boot Sequence.How a linux system boots?
This will help unix administrators in troubleshooting some bootup problem.
Before discussing about it I will notedown the major component we need to know which are responsible for the booting process.


        1.BIOS(Basic Input/Output System)

        2.MBR(Master Boot Record)

        3.LILO or GRUB