ubuntu How to Reset Forgotten Root Password in Ubuntu

In this article, you will learn how to reset the forgotten root password on Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

Firstly, you need to either power on or reboot your Ubuntu system. You should get a grub menu as shown below. If you are running your system on VirtualBox, press the ‘SHIFT’ key on the keyboard to bring up the boot menu.

Ubuntu Grub Menu
Ubuntu Grub Menu

Next, press the 'e' key to edit the grub parameters. This should display a screen as shown below.

Grub Boot Parameters
Grub Boot Parameters

Scroll down until you get to the line that begins with 'linux /boot/vmlinuz' the entire line is highlighted below.

Find Grub Boot Parameter
Find Grub Boot Parameter

Narrow down to a section that reads "ro quiet splash $vt_handoff".

Locate Grub Boot Parameter
Locate Grub Boot Parameter
 

Replace "ro quiet splash $vt_handoff" with rw init=/bin/bash as shown. The aim is to set the root file system with read and write commands denoted by the rw prefix.

Enable Root Filesystem
Enable Root Filesystem

Thereafter, press ctrl + x or F10 to reboot your system. Your system will boot into a root shell screen as shown below. You can confirm that the root filesystem had read and write access rights by running the command.

# mount | grep -w /

The output in the screenshot below confirms read and write access rights denoted by rw.

Confirm Root Filesytem Permissions
Confirm Root Filesytem Permissions

To reset the root password execute the command.

# passwd 

Provide a new password and confirm it. Thereafter, you will get a ‘password updated successfully’ notification.

Reset Root Password in Ubuntu
Reset Root Password in Ubuntu

With the root password successfully changed, reboot into your Ubuntu system by running the command.

# exec /sbin/init

Thank you for coming this far. We hope that you can now comfortably reset the forgotten root password on your Ubuntu system from the grub menu.

0 (0)
Article Rating (No Votes)
Rate this article
Attachments
There are no attachments for this article.
Comments
There are no comments for this article. Be the first to post a comment.
Full Name
Email Address
Security Code Security Code
Related Articles RSS Feed
Linux Find Large Files
Viewed 911 times since Mon, Oct 29, 2018
LVM: Extend SWAP size by adding a new Logical Volume
Viewed 918 times since Sat, Jun 2, 2018
RHEL: Back-up/Replicate a partition table
Viewed 1330 times since Sun, May 27, 2018
Logrotate Example for Custom Logs
Viewed 1249 times since Sun, Jan 12, 2020
10 Linux DIG Command Examples for DNS Lookup
Viewed 682 times since Sun, Sep 30, 2018
stunnel How To Set Up an SSL Tunnel Using Stunnel on Ubuntu
Viewed 117 times since Sun, Dec 6, 2020
How to create a Systemd service in Linux
Viewed 159 times since Mon, Dec 7, 2020
CentOS / RHEL 7 : Configuring an NFS server and NFS client Linux NFS
Viewed 3762 times since Fri, Feb 21, 2020
Secure NTP with NTS
Viewed 124 times since Sun, Dec 6, 2020
How to Configure ‘FirewallD’ in RHEL/CentOS 7 and Fedora 21
Viewed 1075 times since Wed, Oct 9, 2019