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Level 1

11 points

My iMac will not boot up. It failed to download the new High Sierra and crashed

I tried to download the new High Sierra software to my iMac. After about one hour it continued to say 44 minute wait time. I turned it off and now it will not boot up. Any hel appreciated

Posted on Nov 12, 2017 6:35 AM

Best reply

den.thed

Level 9

77,008 points

Posted on Nov 12, 2017 6:47 AM

Startup in macOS Recovery > select Disk Utility > Repair the Macintosh HD startup disk > then go to Reinstall MacOS and install MacOS.

see > About macOS Recovery - Apple Support for the full instructions.

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My iMac will not boot up. It failed to download the new High Sierra and crashed

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