Linux boot (bootstrap)

Init process

(depending on the boot loader option, Linux can now enter single user mode.) In this mode, the initial script has not been executed and we can detect and fix possible errors on the computer.

Init then runs a series of initial scripts (startup scripts), which are common shell scripts in Linux. These scripts perform the following functions:

Set the computer name, time zone, detect the file system, mount the hard disk, empty the temporary files, set up the network ...

When these initial scripts, the operating system is fully ready, just, no one can log in!!! Init will give you a login dialog, or a graphical login interface.

Enter the user name (e.g. Vamei) and password, done!

In the following procedure, you will operate the computer as a user Vamei. In addition, depending on your settings when you create a user, Linux will also put you in a group, such as a stupid group, or a Vamei group.

So you will be a user Vamei and a member of the Vamei group. (Note that group Vamei and user Vamei only have the same name, so you can call Dell, as well as Dell's boss.) You can also be a user Vamei, as well as a member of the stupid Group)

Summarize

BIOS, MBR, boot loader, kernel, init process, login

User, Group.

Linux boot (bootstrap)