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If a flashing question mark appears when you start your Mac

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If your Mac starts up to a question mark

A folder with a flashing question mark means that your startup disk is no longer available or doesn't contain a working Mac operating system.


Flashing question mark screen

If the question mark is persistent, and your Mac does not start up normally:

  1. Press and hold the power button on your Mac for up to 10 seconds, until your Mac turns off.
    Every Mac has a power button. On notebook computers that have Touch ID, press and hold Touch ID.
  2. Use Disk Utility to repair your startup disk. Follow the steps for a Mac with an Intel processor.
  3. If Disk Utility found no errors or repaired all errors, reinstall macOS.
  4. If you still need help, please contact Apple Support.

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