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high sierra install issue

tried installing High Sierra update and getting a flashing folder with a questionmark, computer will not start

MacBook Air, iOS 11.1

Posted on Nov 11, 2017 7:01 AM

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Level 10

111,168 points

Posted on Nov 11, 2017 7:06 AM

That means your Mac cannot find a valid system folder to startup from.

About the screens you see when your Mac starts up - Apple Support

Boot into Recovery and reinstall Mac OS.

About macOS Recovery - Apple Support

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Best reply

Level 10

111,168 points

Nov 11, 2017 7:06 AM in response to chicagoexport

That means your Mac cannot find a valid system folder to startup from.

About the screens you see when your Mac starts up - Apple Support

Boot into Recovery and reinstall Mac OS.

About macOS Recovery - Apple Support

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high sierra install issue

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