É muito urgente!

Como posso entrar na minha conta adiministradora?

During installation, the Account you set up initially is configured to be able to perform administrative tasks. If you are being asked for the administrative account, just enter your password. If you are logged in and want an administrative (=root) prompt, open a Terminal and run:

sudo bash

Enter your password when asked and you will get a root-prompt. Please not that this is normally not necessary and should be avoided as you can severly damage your system if you run some commands without knowing exactly what they do.

Eu não estou logada na conta adiministrativa!
Como posso logar nela?