Recovering Root Password On Debian And Grub2
On the grub boot screen type
e for edit. Next edit the line starting with
linux, at the end add
init=/bin/bash. It should look like this.
linux /boot/vmlinuz-version root=UUID=hex ro quite init=/bin/bash
Ctrl-X to boot, you should land on a prompt without having to type your password. Next enter the following two commands:
mount -o remount,rw / passwd
Enter the new password twice, type the following:
You should be all set!