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anetria288 Author

Level 1

4 points

Installed MacOS Big Sur Computer Will not Reboot

Having issues after installing Big Sur. Now my computer will not reboot up it’s stuck on black screen showing loading in 1 minute.

iMac 27″, macOS 10.13

Posted on Jun 3, 2021 10:31 PM

Top-ranking reply

PRP_53

Level 10

91,723 points

Posted on Jun 5, 2021 7:46 AM

Shutdown via whatever means possible including Power Button. Disconnect all external drives and Restart in Safe Mode. It will do a Repair Disk, clear cache files and only load Apple Software, extensions and fonts - it will load slowly - Normal. This may or may not allow the update process to complete. If Yes, the Setup Assist of Big Sur will be presented.

[Edited by Moderator]

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Installed MacOS Big Sur Computer Will not Reboot

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