Flashing gray folder with question mark

MacBookPro froze up when installing OS update. Now have light screen with a gray folder with questio mark that flashes off and on.

Posted on Jul 20, 2018 9:52 AM

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Carolyn Samit

Level 10

165,725 points

Posted on Jul 20, 2018 9:54 AM

That means your Mac can’t find a system folder to boot from.

Troubleshooting help > If a flashing question mark appears when you start your Mac - Apple Support

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Top-ranking reply

Carolyn Samit

Level 10

165,725 points

Jul 20, 2018 9:54 AM in response to ponyross

That means your Mac can’t find a system folder to boot from.

Troubleshooting help > If a flashing question mark appears when you start your Mac - Apple Support

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Flashing gray folder with question mark

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