LINUX system boot process the whole solution

1, the system Linux 6.0 and 7.0 Series series system boot process:
Description:
1, the boot BIOS POST
2, MBR boot (boot on a disk sector 512K)
. 3, GRUB boot menu (single-user mode, or can rescue mode)
4, to load the kernel kernel
5, start the init process (the first process 6 series 7 series is the first process systemd
6, read initab boot files and other execution rc.sysinit startup script file
7, start mingetty, start system login screen