Ubuntu forgot system login password, how to change password

Source: Internet
Author: User

Ubuntu forgot the system login password, how to change the password.

1, restart, press ESC to enter boot Menu, select recovery mode (usually the second option).
2, at the # prompt with Cat/etc/shadow, look at the user name.
3. Enter the passwd "user name" (quotation mark).
4. Enter a new password.
5. Reboot and log in with the new password.

PS: When you modify the password, you may be prompted to modify the failure, possibly read-only to the permission problems caused by, you need to change the permissions as follows:

Mount-o remount, RW/

In the 3rd step of execution.

Ubuntu forgot system login password, how to change password

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