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How to run Disk Utility First Aid on Time Machine backup for Mac?

The time machine backup seems to be working fine, but I wanted to check it out with Disk Utility First Aid just to be cautious. When I try to run First Aid, I get a message saying the disc couldn't be unmounted. Is that normal?

iMac 27″, macOS 12.6

Posted on Jun 9, 2023 10:35 AM

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Posted on Jun 10, 2023 5:17 AM

I don't routinely use Disk Utility First Aid on my Time Machine drives as they work just fine. If I were to do so, I would boot the Mac into Recovery, and use Disk Utility from there, before rebooting normally.

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How to run Disk Utility First Aid on Time Machine backup for Mac?

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