About macOS Mojave Security Update 2021-005 10.14.6

I can't install this upgrade on my iMac27 late 2014. Downloading is OK, but at the end of installing, I get the message that is wasn't possible. Same for Big Sur

iMac 27″, macOS 10.14

Posted on Sep 16, 2021 2:27 AM

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1 reply

BDAqua

Level 10

250,253 points

Sep 16, 2021 4:26 AM in response to RickyCha

Try installing it in Safe Mode...

Safe Boot, (holding Shift key down at startup).

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About macOS Mojave Security Update 2021-005 10.14.6

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