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I forgot my Ubuntu password, can't open grub menu either, is there a way to fix this? Help please

I tried to open grub menu after turning on my PC, with ESC, shift nothing worked, also went to etc/default but could not find grub file

Ryu Suzuki
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1 Answers1

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Obtain a copy of Ubuntu Install image or Live Image on a usb drive. Boot from that USB drive.

When the Install screen appears, press ctrl + alt F3, this will give you a shell. In the shell type, sudo bash this will now give you root access.

Find the drive that has your original operating system installed with:

lsblk

then run:

mkdir /mnt/newroot
mount /dev/sdx /mnt/newroot (replace with the correct device you identified)
or if your root is on a lvm
mount /dev/mapper/....... /mnt/newroot (replace with the correct device you identified)
mount -R /run /mnt/newroot/run
mount -R /dev /mnt/newroot/dev
mount -R /proc /mnt/newroot/proc
mount -R /sys /mnt/newroot/sys
chroot /mnt/newroot /bin/bash

This will put you into a root shell of your orignal operating system, to change your password of your account, type:

passwd <username>

enter your new password when prompted.

you will now be able to reboot and log into your system as you normally would have.

Luke Attard
  • 982