Apple’s Worldwide Developers Conference to kick off June 10 at 10 a.m. PDT with Keynote address

The Keynote will be available to stream on apple.com, the Apple Developer app, the Apple TV app, and the Apple YouTube channel. On-demand playback will be available after the conclusion of the stream.

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unable to boot external ssd after disable security feature 2020 imac 27inch 5k

I can not boot a external ssd with Mojave from my iMac 27inch 5k 2020 computer

with the security feature turn to boot an external boot drive and no security enabled.

Posted on Oct 27, 2020 3:09 AM

Best reply

dialabrain

Level 10

122,813 points

Posted on Oct 27, 2020 3:31 AM

You cannot boot a version of macOS older than what your iMac was shipped with. The only way to run Mojave on a 2020 iMac would be as a VM in Parallels Desktop, VMWare Fusion or VirtualBox.

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unable to boot external ssd after disable security feature 2020 imac 27inch 5k

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