Centos startup details

What is the centos startup process?

1. Load the BIOS information (the computer hardware information is saved in the BIOS) and find the first boot device (we can set the boot in the BIOS for the hard disk)

2. Find the MBR Boot Loader Based on the first boot device (MBR is the first sector boot loader of the hard disk and can be considered as grub spfdisk and other programs)

3. When the boot loader finds the kernel, the kernel loads the hardware information and loads the driver (the hardware is transferred to the software)

4. The INIT process init will be called later to start various related services.