I need root

You should be able to do all typical systems administration with the shepherd account. This account is permitted to perform sudo <cmd> for those commands that require root privileges, but no more, in order to cut down on inadvertent changes that will get in the way of UBOS’ way of doing things. So: “Root is not the account you are looking for.”

However, if you insist, there are two easy ways of getting root:

• On a system where you have access to the console, you can simply log into the console as root.

• As user shepherd, invoke sudo su or sudo bash. This will give you a root shell.

See also What is the default “root” password?.