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How to Erase and Factory Reset Your Mac

However, we highly recommend that you take the time to perform a Time Machine backup of your system using an external drive. That way, the same backup volume can be used by Apple’s Migration Assistant during a macOS installation to quickly transfer your applications, files and settings from the old Mac to a new one.

Unlink your Apps

There are certain apps that will need to be manually unlinked from your Mac before you say goodbye to it. Some third-party apps require licenses that only work on a limited number of computers, so think about any licenses you may have purchased.

Similarly, you should de-authorize your iTunes account on the Mac, as this removes its access to content that you bought from the iTunes Store, iBooks Store, or App Store, including things like music, movies, TV shows, apps, and books.

To learn how to de-authorize your iTunes account, check out our dedicated guide.

Sign Out of iCloud

It’s also important to disable Find My Mac and sign out of ‌iCloud‌ in macOS. That way you’ll know for sure there isn’t anything lingering on your Mac that links your Apple ID to this machine. The following steps show you how.

  1. lick the Apple () symbol in the top left corner of your Mac’s screen and select System Preferences….
  2. Click iCloud in the preference pane.
  3. Uncheck all the boxes in the list to remove copies of the related data on this Mac.
  4. Click Sign Out.

How to Erase and Reset Your Mac

Now that you’ve taken the above precautionary steps and unlinked your purchases and accounts, it’s time to erase your Mac’s drive and reset the system to its factory defaults.

  1. Click the Apple () symbol in the top left corner of your Mac’s screen and select Restart….
  2. Click Restart.
  3. Hold down the Command and R keys as soon as you hear the Mac tone indicating a reboot.
  4. Wait for the macOS Utilities screen to appear, then click Disk Utility.
  6. Choose your Mac’s system drive, usually named Macintosh HD, then click Erase.
  7. Select the Format option Mac Extended (Journaled) or APFS.
  8. Click Erase, confirm the action if prompted, and wait until formatting is complete.
  9. Next, close Disk Utility and click Reinstall macOS.
  10. Follow the installation prompts and allow the procedure to continue until you see the Setup Assistant appear.
  11. Press the keys Command+Q to shut down your Mac.

And that’s it. You’re now ready to sell your Mac, pass it on, set it up as new, or restore a backup.

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