[ubuntu-uk] 12.04 LTS

[Alan Lord]

On 29/08/13 13:27, Owen Branley wrote:
> Superuser can now only log in as a guest. Old username and password lost
> after a crash some time ago. One solution could be to re-install as data
> backup is ok. Is there another way?

Short answer: Boot the machine from a USB or CD, mount the machine's 
hard drive and edit etc/passwd.

Google will help with more complete instructions for this commonly 
needed type of recovery ;-)

HTH

Al