Originally Posted by byannoni
If you want, you can make a root password with this:
The root account was there, and you can always su to root.
What I did in post #8, I tried to use the users sudo password with su.
So I got the "Authentication Failure" message. In Ubuntu,
the root password was never set and there was no password for root. So
it does not ask for root password in the recovery mode also.
Note the system asked for password in recovery mode when I set one.
What ubuntu users don't know, that the root account always exists without
a password. So it is better that they know about the root and set a password.
The thread is interesting.