Don't worry if you forgot your admin account or not created admin account and using Standard account only. You can follow below steps and create new admin account on MAC machine You can create a new administrator account by restarting the Setup Assistant: Boot into Single User Mode: Start/restart your Mac. As soon as you hear the startup tone, press and hold ⌘ + S until you see a black screen with white lettering. (If you end up back on the login screen after a flash of the black screen with white lettering, enter your password and it will return to the black screen.) Check and repair the drive by typing /sbin/fsck -fy then ↩ enter - as directed by the on-screen text. Mount the drive as read-write by typing /sbin/mount -uw / then ↩ enter. Remove the Apple Setup Done file by typing rm /var/db/.AppleSetupDone then ↩ enter. Reboot by typing reboot then ↩ enter. Complete the setup process, creating a new admin account.