How to Reset Forgotten Root Password in RHEL/CentOS and Fedora
- Booting into single user mode.
- Using boot disk and edit passwd file.
- Mount drive to another system and change passwd file.
Here, in this article we are going to review “Booting into single user mode”
option to reset forgotten root password.
Cautious: Kindly take copy of backup of your data before test.
STEP 1. Boot Computer and Interrupt while booting at GRUB stage
hitting ‘arrow‘ keys or “space bar“.
STEP 2. Type ‘a‘ to modify kernel argument. Anytime you can cancel typing
‘ESC‘ key.
STEP 3. Append 1 at the end of “rhgb quiet” and press “Enter” key to boot
into single user mode.
STEP 4. Type command “runlevel” to know the the runlevel where you are
standing. Here “1 S” state that your are in a single user mode.
STEP 5. Type ‘passwd‘ command without username and press ‘Enter‘ key in
command prompt. It’ll ask to supply new root password and re-type the same password for confirmation. “Your are Done” Congratulation!!!