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Reinstall macOS

You can use macOS Recovery, the built-in recovery system on your Mac, to reinstall macOS. macOS Recovery keeps your files and user settings intact when reinstalling.

Important: Your computer must be connected to the internet to reinstall macOS.

  1. Start up your computer in macOS Recovery:
    • On a Mac with Apple silicon: Choose Apple menu  > Shut Down, press and hold the power button until “Loading startup options” appears, select Options, click Continue, then follow the onscreen instructions.
    • On an Intel-based Mac: Choose Apple menu  > Restart, then immediately press and hold one of these key combinations, depending on what you want to do:
      • Install the latest version of macOS compatible with your computer: Option-Command-R.
      • Reinstall your computer’s original version of macOS (including available updates): Option-Shift-Command-R.
      • Reinstall your current version of macOS: Command-R.
  2. In the Recovery app window, select Reinstall for your macOS release, then click Continue.
  3. Follow the onscreen instructions.
  4. In the settings where you select a volume, select your current macOS volume (in most cases, it’s the only one available).


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