This article describes how to reset the password of an administrator account on a Mac.
How to Reset Your Admin Password on Mac | Forgot Your Mac Password – Reset Admin Password
Resetting an administrator account is not difficult, as long as you have a second administrator account to use. It is a good idea to set up a second administrator account to troubleshoot various issues, including forgetting a password.
Of course, this only works if you haven't forgotten the password for the other administrator account. If you can't remember that password either, try one of the other methods described below.
Log in to a second administrator account.
