Time Machine not working since Big Sur 11.1

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Level 1

63 points

Time Machine not working since Big Sur 11.1

I have a problem with a horizontal line on my display. Called Apple and advisor had me reload Big Sur 11.1. Now Time Machine isn't recognized by computer.

iMac 21.5″, macOS 10.14

Posted on Dec 23, 2020 12:48 PM

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Answer 1

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The_Knowledge_Seeker

Level 4

3,522 points

Dec 23, 2020 1:33 PM in response to Lourufmom

OK.

Shut down your Mac.
Unplug the Time Machine drive
Plus the Time Machine drive back in
Reboot your Mac

Does this fix it?

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Answer 2

Lourufmom Author

Level 1

63 points

Dec 23, 2020 1:25 PM in response to The_Knowledge_Seeker

The TM icon disappeared from my desktop. it is not in finder. When I tried to back it up from the task bar, I got the message that the disk was not available. It was there and working this morning until I reloaded Big Sur later in the morning. I did that on the advice of an Apple advisor who thought the vertical red line on my display would be fixed if I reloaded.

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Answer 3

Dec 23, 2020 1:44 PM in response to Lourufmom

OK. Sounds like your external dive or its cable is faulty.

Check Disk Utility. Does it appear there? If it does then the drive probably needs reformatting. But if Disk Utility can't even see it, it's not usable.

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