Linux boot process

Linux boot process

1. Read BIOS settings include (CPU. Hard disk, memory, device, clock, etc information)

2. Read the MBR (Master boot record, pre-boot information and partition table information) of the first sector of the No. 0 disk

3. Read the boot loader (initialize the hardware device, set up the mapping map of the memory space)

4. Loading the kernel

5.init Operating Level (init 3 init 5)

6.init Process Execution Rc.sysinit (start swap partition, set path, set network configuration)

7. Boot the kernel module (/etc/module/dist.conf)

8. Executing different scripting programs

9. Executive/etc/rc.d/rc.local

10. Execute the/bin/login program and enter the login status.

Linux boot process