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Time Machine problem

I am running Big Sur 11.7.4. I back up periodically with an external drive using Time Machine. It has always worked fine until my last successful back up in January 2023. Now when I try to back up I get this message: Time Machine couldn’t complete the backup to “G-DRIVE mobile USB”Time Machine did not finish backing up because some files were unavailable. Backups will resume when your Mac is unlocked. As far as I know, I haven't changed anything. How can I fix this so I can back up?

MacBook Air 13″, macOS 11.7

Posted on Mar 15, 2023 8:41 PM

Top-ranking reply

Jack-19

Level 8

46,020 points

Posted on Mar 15, 2023 9:03 PM

Hi there!

I'd recommend you review the following articles:

- If you can't back up or restore your Mac using Time Machine - Apple Support
- Time Machine troubleshooting on Mac - Apple Support

If the issue continues, erase your backup disk, then use Time Machine to select it as your backup disk again.

Jack

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Time Machine problem

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