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Upgrading from Sierra to High Sierra on a 2011 imac

Just before completing upgrade it has stuck, any helpwelcome

iMac 21.5″, macOS 10.12

Posted on Sep 14, 2023 3:26 PM

Top-ranking reply

Level 9

50,178 points

Posted on Sep 14, 2023 7:00 PM

Hi,

If your iMac is able to start up macOS, you can upgrade from System Preferences > Software Update.

If you can't, start up from Recovery mode, then reinstall macOS on your iMac.

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