Could I find a kind and knowledgeable person to help with my problem.
I have just purchased a used Mac meaning I don't have administrative power of my computer and the guy who sold it doesn't know the password.
How can I erase this guys administrative control and make me the one and only administrator if I don't know his password.
I've tried to change it within the command line but I do not have a username and root #.
These problems probably seem very simple but are causing me to lose my mind. If anyone knows the problem and wants to prevent a person from going insane...