boot sequence

1.load bios(hardware information)

2.read MBR's config to find out the OS

3.load the kernel of the OS

4.init process starts..

5.execute /etc/rc.d/sysinit

6.start other modules(etc/modules.conf)

7.execute the run level scripts （启动/etc/rc0.d或rc1.d或rc2.d……）

 

NFS:Network File System 

 

8.execute /etc/rc.d/rc.local

9.execute /bin/login

10.shell started..

 

bty: rc.d is the directory for all run control daemons.

daemons are system services, usually running in the background.
rc意即run commands，d是daemons的意思