Reset root password

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Resetting Root Passwords

Below are several methods one can use to reset the system's root password should it be forgotten or corrupted. The methods are the same in principal but differ in what is required to access them. There are more ways to do this you can find in a google search too.

Method 1 - Using the Arch Live CD

1. Boot the Arch Live CD 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 - Using GRUB's Boot Menu

Note: If you have an USB keyboard, it will likely not work when you hit your (#) prompt. PS/2 keyboard systems should be fine.

1. Select the appropriate entry in the GRUB menu and press Template:Keypress to edit the line.

2. Select the kernel ... line and press Template:Keypress again to edit it.

3. Append init=/bin/bash at the end of line.

4. Press Template:Keypress to boot (don't worry, this change is only temporary and will not be saved to your menu.lst). Once you boot you should be at a (#) prompt.

5. Your root file system should be mounted as readonly so remount it as read/write:

# mount -n -o remount,rw /

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

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

Method 3 - Using Another Linux Distro on Your System

If you have another distro installed on another partition or hdd on the same system, you can simply chroot into your "broken" partition from a shell and reset the password from there. See this guide for an example.