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How to unlock disk if trying to reinstall macOS Sierra

Trying to reinstall macOS Sierra and my OS X Base system is locked… what should I do

iMac Line (2012 and Later)

Posted on Nov 26, 2021 1:08 PM

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Level 8

42,554 points

Posted on Nov 26, 2021 2:56 PM

You do not install Sierra onto the OS X Base System, that is the Apple Server you are connected to.

In Disk Utility you should see your Disk (Apple SSD.... or similar) in the left hand panel under

internal.

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