Grub_Legacy
BIOS = Basic INPUT\OUTPUT system executes MBR MBR = Master Boot Record executes GRUB GRUB = Grand Unified Bootloader executes kernel Kernel = kernel executes /sbin/init init = init executes run level program Run level = run level are program executes from /etc/rc. d/rc*. d/ BIOS In a PC, booting Linux begins in the BIOS at address 0xFFFF0. 1. The first step of the BIOS is the power-on self-test (POST). The job of the POST is to perform a check of the hardware. 2. The second step of the BIOS is local device enumeration ( எண்ணுகிறது or mention (a number of things) one by one ) and initialization. 3. To boot an operating system, the BIOS runtime searches for devices that are both active and bootable in the order of preference defined by the CMOS settings. MBR The Master Boot Record (MBR) contains the primary boot loader. The MBR is a 512-byte sector, located in the...