It’s important to choose a safe and secure password for any machine, but sometimes it’s not so easy to remember the password for a long time, which sometimes tend to remove the OS and reinstall. Why to make the process such difficult when you can change the password without making much moderation.
For a fresh start – reboot the machine.
Hold shift key to get into GRUB, for a dual booted version they automatically get into GRUB.
Select your version of Ubuntu image and press E to edit the image.
Find the line starting with Linux and at the end of the line type this command ->
Then press F10 or ctrl + x to save the changes and boot OS, if it comes as a blank page with a blinking underscore then do redo the above procedures carefully.
Hope it worked till now!
Now you get into root mode and type
$passwd <your username>
System will prompt to enter your new password. Enter a valid and easy_to_remember password and save the change.
Reboot the system, and congratulations you are back to Ubuntu 🙂