Mac storage basics · User accounts, voices and system extras
How do I delete an old user account on my Mac to free space?
Short answer: In System Settings → Users & Groups, open the account's info and choose Delete User, then pick Delete the home folder to actually free its space (copy anything needed first).
Open System Settings → Users & Groups, click the info button next to the account, and choose Delete User (you'll need an administrator password). macOS asks what to do with that person's home folder:
- Save the home folder in a disk image — keeps everything, so it frees little space unless you then move the image to an external drive.
- Don't change the home folder — keeps it as is.
- Delete the home folder — frees the space.
Copy anything worth keeping first. You can't delete the account you're signed in with.