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Level 1

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Update Mac OS from external hard drive

Hello, currently my iMac internal hard drive are dead. And using a external hardrive to boots it up and run a Mojave mac os.

Will it be able to update mac os direct from the app store? Or it still require a bootable drive?

iMac 21.5″, macOS 10.14

Posted on Mar 4, 2021 5:37 PM

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Level 10

418,273 points

Posted on Mar 4, 2021 7:51 PM

The external will just behave as an internal drive. It will have a recovery partition on it too.

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