Time Machine Disk does not Mount on 2019 MacBook Pro

App & System Services Hardware
SimonKravis OP
Created Oct ’22
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I have been using an "Elements SE" 1 Tb USB hard drive for Time Machine backup on a 2012 MacBook Pro running Catalina, where it worked OK. When I plug the drive into a 2019 MacBook Pro running Monterey, Time Machine cannot write to it as it appears as read-only. Whe I try and inspect the disk using Disk Utility it appears as unmounted, and greyed out, and the Mount button is greyed out. First Aid on the disk fails. What do I have to do to make it useable by Time Machine on the 2019 MacBook Pro?

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darkpaw OP
Oct ’22

You'll have better luck asking this question in the Apple Support Forums that are run by Apple Support.

These are the Developer Forums where developers chat about their code and how to accomplish things in code. It's not the right place for product support questions.

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Time Machine Disk does not Mount on 2019 MacBook Pro
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