Reset root password

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Revision as of 06:17, 17 October 2009 by Lloyda2 (Talk | contribs) (Method 1 - LiveCD: clean up and hopefully disambiguate a bit.)

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If you have been locked out of your root account for whatever reason, you can use these processes to reset your root password and regain access to your system.

Method 1 - LiveCD

1. Boot the Arch ISO LiveCD and mount your root partition to /mnt.

2. Bind mount the /dev, /sys, and /proc special mount points into your /mnt:

mount --bind /dev /mnt/dev
mount --bind /sys /mnt/sys
mount --bind /proc /mnt/proc

3. chroot into your installation:

chroot /mnt /bin/bash

4. Use the passwd command to reset your root password.

5. Reboot and don't lose your password again!

Method 2 - Single User Mode

  1. At the Grub menu, highlight the entry for your system and press 'e' to edit.
  2. Highlight the 'kernel' line and press 'e' again to edit.
  3. Append a space and the number '1' to the end of your kernel line. This tells the kernel to boot to init level 1, or Single User Mode.
  4. Press enter to save, and 'b' to boot.
  5. The system should boot as normal, except instead of booting to a login prompt, it should drop you to a basic shell with a '#' prompt.
  6. You can use the passwd command from here to reset your password.