Problem scenario
Using Raspberry Pi, you do not know the root / administrator password. For example you go to Menu -> System Tools -> Root terminal. You are prompted with "Enter the administrative password." No password works. What should you do?
Solution
We do not know. We suggest you change it if you want to know for certain. Open a regular terminal. Run this:
sudo su - # enter the password that you want. You will not be challenged for a current password.
passwd