Guide to Devops technologies

http://en.wikipedia.org/wiki/Hanuman  శ్రీ ఆంజనేయo                                                             మనోజవం మారుత తుల్య వేగం                                                             జితేంద్రియం బుద్ధిమతాం వరిష్టం                                                             వాతాత్మజం వానర యోధ ముక్యం                                                             శ్ర...

Article Under Construction There are 6 stages of a typical Linux boot process 1.BIOS 2.MBR 3.GRUB/LILO 4.Kernel 5.Init 6.Runlevel Programs 1.BIOS: Basic Input Output System is the lowest level interface to peripherals andcontrols the first step of the boot process. BIOS performs some integrity checks and serches,loads, executes the bootable program. Its OS independent. It checks for a bootable media in CD-ROM,HDD,USB to use to boot the system. you can press a key(F2,F12,F10 depends on BIOS settings on the system) during the BIOS start-up to change the boot sequence. Now a days network boot à typically called PXE-boot got more familiar. BIOS looks for Master Boot Record(MBR) which starting at the first sector on the first hard drive, loads its contents into memory, and then passes control to MBR. A Typical BIOS screen would look like as below. Ø   The main Task BIOS performs is POST ( Po...