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### Changing Passwords in Linux Using GRUB 1. **Access the GRUB Menu**: Reboot your system and hold down the **Shift** (BIOS) or press the **Esc** (UEFI) key to access the GRUB menu. 2. **Edit the GRUB Entry**: Highlight the Linux entry and press **'e'** to edit. 3. **Modify Boot Parameters**: Find the `linux` or `linux16` line and add `single` or `init=/bin/bash` at the end. Press **Ctrl + X** or **F10** to boot. 4. **Remount the Filesystem**: If booted into a bash shell, run `mount -o remount,rw /` to remount the filesystem as read-write. 5. **Change the Password**: To change the root password, run `passwd`. For a user, run `passwd username`. 6. **Reboot the System**: After changing the passwords, reboot the system by running `exec /sbin/init` or `reboot`. 7. **Log In**: Log in with the new root or user password. originally posted at https://stacker.news/items/666211