How do you reset mac to factory settings?

  1. Use an app like SuperDuper or Carbon Copy Cloner to clone your internal hard drive to an external drive. This enables you to access all your old files, and the drive can be re-cloned to the internal drive if you want to restore your Mac.
  2. Deauthorize your iTunes store account. (You should also deauthorize any third-party apps, such as Photoshop, that are locked to your Mac).
  3. Turn off FileVault (if you are using it).
  4. Sign out of iCloud.
  5. Restart the Mac in Recovery Mode (hold down Command and the R key during restart).
  6. Use Disk Utility to erase the hard drive. Click on Disk Utility > Continue. Select the main volume and click Unmount then Erase). Quit Disk Utility (Disk Utility > Quit Disk Utility).
  7. Click Reinstall OS X and Continue. Follow the instructions to reinstall Mac OS X.