Setting up a root password is one of the steps when installing Fedora. If you forget, or lose, the root password, there are two common methods to reset it:
In Rescue Mode
Using a Fedora Live Media (USB/DVD/CD)
Changing passwords as root does not prompt for the old password.
While booting the system the GRUB2 menu will be displayed.
To boot the system into rescue mode using
bash follow these steps:
Use the arrow keys to select the boot entry you want to edit
Press e to edit that entry
Use the arrow keys to go to the line that starts with
Go the the end of that line, add a space then type
If your disk is encrypted, you may need to add
Press Ctrl-x or F10 to boot that entry
Run the command:
It will prompt you to enter the new root password twice.
Restore the SELinux context and permissions with:
If you do not restore the SELinux permissions, the boot process may fail. You may have to do a hard-reboot and start back at step 1.
Reboot the machine with:
The system may take a while to boot as SELinux will be relabeling its permissions on the filesystem.
If you see the Plymouth boot screen you can press the
ESC key on your keyboard to view the SELinux progress.
Once it is complete, your system is ready and your root password has been successfully changed.
To download and create a live USB of Fedora Workstation, follow the instructions on the Fedora USB Live Media Quick Doc.
Boot the Live installation media and choose
From the desktop, open a terminal and switch to root using
su (it won’t ask for a password)
To view your hard drive device nodes, in the terminal type:
For this example we will use
/dev/sda1 for the
/boot partition and
/dev/sda2 for the root
If you are using LVM partitions, type:
sudo lvscan and note the
/dev path of your root partition.
For this example we will use
Create a directory for the mount point (use the
-p option to create subdirectories):
mkdir -p /mnt/sysimage/boot
/ (root) partition (be sure to use the actual device node or LVM path of your root
To mount root on a standard partition scheme enter:
mount /dev/sda2 /mnt/sysimage
To mount root on an LVM partition scheme enter:
mount /dev/fedora/root /mnt/sysimage
Continue the process by mounting
mount /dev/sda1 /mnt/sysimage/boot mount -t proc none /mnt/sysimage/proc mount -o bind /dev /mnt/sysimage/dev mount -o bind /run /mnt/sysimage/run
chroot to the mounted root partition with:
chroot /mnt/sysimage /bin/bash
Change the root password:
Exit out of chroot with:
and exit out of the terminal.
Reboot your system and boot from the hard drive.
Congratulations, your root password has been successfully changed.
If you cannot enter rescue mode because you forgot the Firmware/BIOS password here are some options:
Refer to your computer’s documentation for instructions on resetting the Firmware/BIOS password in CMOS memory.
Temporarily move the system hard disk to another machine, and follow the procedures above to reset the root password.
If you have set a password for your boot loader, refer to Creating and Using a Live Installation Image.
If you want to reset the boot loader password, refer to the instructions on how to Reset the Bootloader Password.