In this post will guide you simple steps to resetforgotten root passwordinRHEL,CentOSandFedoraLinux with example. There are various ways to reset root password which are.
- Booting intosingle usermode.
- Usingboot diskand editpasswdfile.
- Mountdriveto another system and changepasswdfile.
Here, in this article we are going to review “Booting into single user mode” option to reset forgottenrootpassword.
Cautious:We urge to take backup of your data and try it out at your own risk.
STEP 1. Boot Computer and Interrupt while booting atGRUBstage hitting ‘arrow‘ keys or “space bar“.
STEP 2. Type ‘a‘ to modify kernel argument. Anytime you can cancel typing ‘ESC‘ key.
STEP 3. Append1at 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!!!
What ifGRUB bootloader is password protected?We’ll cover in our next article, how to protectGRUBwith password and reset the same. Stay tuned…
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