From there you can reset the network and user account configuration or change the root password and reboot normally. Changing the Root Password If you need to reset the root password, boot in single user mode. You need to know the root password to run this application. In the panel that results, chose Local user, the default. For a new account, enter the user's full name and their account name, and their password, which is optional.
Account names are typically all lower case, no spaces, and no more than eight characters.
Using the Workspace Manager, select any file from the account you are recreating. In the Attributes mode of the Inspector, locate the Owner field. Create a new user as shown above. Alone in the dialog. You need to know the root password to run this application.