Solutions for Linux system root password forgetting

Computer room A CentOS system server, because this server system installed a long time, and the root password update several times, back to the computer room on-site maintenance, login password forgotten, sad urge ah ~

No way, only the boot into "single user mode" for password reset .

The following document describes the process of changing the password by booting into single user mode:

(1) Restart the server and wait until the booting CentOS interface. Press the ENTER key quickly;

(2) In the Grub interface, press the E key (in fact, after the boot I was always press the E key can also go to the following interface);

(3) in the root (hd0,0) interface Select the second item kernel, press the E key;

(4) in <rdtype=pc keytype=us # # # #项后添加 blank single press ENTER key;

(5) Back to root (hd0,0) interface, press B to restart

If you do, you can go to single user mode and reset the root password. Finally restart the server, with the new Reset password Login Server ~!

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In fact, in short, forget the root password, the process of cracking:
Single-user mode: Power-on press e--> continue input e--> cursor moves to kernel-->e edit-space Enter 1 or single Enter and press B to enter the mono-user mode
Then enter the input passwd root password to enter the password two times and then reboot into 3 mode

Solutions for Linux system root password forgetting