The Lniux Boot Process Explained
The beginning of the boot process varies depending on the hardware platform being used. However, once the kernel is found and loaded by the boot loader, the default boot process is identical across all architectures.
The following are the main stages involved in Linux boot process.This process applied debian,ubuntu and most of linux Distributions
BIOS (basic input/output system)
Master Boot Record (MBR)
LILO (Linux Loader ) or GRUB (GRand Unified Bootloader)
Kernel
init
Run Levels
Now we will have a look at each stage in detailed
BIOS
Load boot sector from one of
Floppy
CDROM
Hard drive
The boot order can be changed from within the BIOS. BIOS setup can be entered by pressing a key during boot up. The exact key depends varies, but is often one of Del, F1, F2, or F10.
(DOS) Master Boot Record (MBR)
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