1. Load the hardware information of the BIOS. 2. Read the MBR's Kernel Loader boot information. 3. Load Kernel's operating system core information. 4. KERNEL performs the init program and obtains Run-Level information. Run-Level records the status of login mainly: shutdown mode, single mode, text mode, graphical mode, reactivation and other modes. 5. InIT executes /etc/rc.d/re.sysinit file, perform Linux system settings and configurations. 6. Activate the core-mounted module (/etc/modules.conf). 7. INIT executes all batch files of Run-Level Scripts. 8. INIT execution /etc/rc.d/rc.local file. 9. Execute the / bin / login program. 10. After login, you will start to control the host with the shell.
