I'd like to perform a CLI installation over a old laptop.
I must login as root, but I can't find where I must write username and password.
Can you help me?

I have found the place: typing 3 and enter.
But trying to login using"root" as username and pw, It says"login incorrect".
Why?

demo and root are the 2 normally used. May need to switch them around.

Ok, thank you.
It was a remaster of mine; so i had changed root password.
Now it's alla right.
Thank you again.