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iMac stuck in boot screen

How to fix an iMac stuck in boot screen


iMac 27", macOS 10.15

Posted on Nov 23, 2019 3:51 PM

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Posted on Nov 24, 2019 1:01 PM

Did you hold down the Shift key for up to 10 minutes when attempting to restart in Safe Mode?


If you are restarting in the Recovery Partition (hold down Command + R on startup until it boots) then open Disk Utilities first, run First Aide 2-3 times back to back and look for errors. If any appear your HD is damaged. If no errors appear, exit DU then re-install Mac OS and attempt to re-start. If it still doesn't work, there is hardware damage and you need to go to an Apple Authorized Service Provider to have it professionally diagnosed and repaired.

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Nov 24, 2019 1:01 PM in response to leslie230

Did you hold down the Shift key for up to 10 minutes when attempting to restart in Safe Mode?


If you are restarting in the Recovery Partition (hold down Command + R on startup until it boots) then open Disk Utilities first, run First Aide 2-3 times back to back and look for errors. If any appear your HD is damaged. If no errors appear, exit DU then re-install Mac OS and attempt to re-start. If it still doesn't work, there is hardware damage and you need to go to an Apple Authorized Service Provider to have it professionally diagnosed and repaired.

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Nov 24, 2019 1:37 PM in response to rkaufmann87

Not sure how that would have happened, except for overnight OS updates, but I'm running Clean MY Mac and think there's just not enough space on the harddrive (almost 200 gb of image and video files I should back up elsewhere).

But, thank you for sticking with me on this! :-)

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Nov 24, 2019 1:49 PM in response to leslie230

CleanMyMac is considered malware by most experience users on these forums. It has zero value as it does NOTHING that Mac OS cannot already do. I would STRONGLY recommend uninstalling it per the developers instructions. Mac OS does not benefit from nor does it require ANY third party antivirus, cleaning or any other types of "maintenance" apps. If simply kept up-to-date and otherwise left alone Mac OS performs reliably for years for most users. You install may have been corrupt due to modifications CMM may have done to Mac OS!

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Dec 2, 2019 2:39 PM in response to rkaufmann87

Thank you for the advice. Although I recently paid for CleanMyMac X, I uninstalled it, and I also reset the SLEEP/WAKE configurations in Energy Saver, which was where the problem was each time I restarted (and i checked off sending the info to Apple). So far so good!

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iMac stuck in boot screen

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