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The software update for Mac OS Big Sur isn't updating. I've tried several times and keep getting an error message saying it wasn't able to complete the update.

macOS Big Sur update keeps failing. I've tried several times and keep getting the same error message.


iMac 27″ 5K, macOS 10.15

Posted on Feb 2, 2021 12:14 PM

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Question marked as Top-ranking reply

Posted on Feb 2, 2021 1:05 PM

How much free space do you have on your boot drive? Big Sur requires a minimum of 35.5 GB free space, more if upgrading from older systems.


Have you tried downloading and installing from Safe Mode?


1 reply

The software update for Mac OS Big Sur isn't updating. I've tried several times and keep getting an error message saying it wasn't able to complete the update.

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