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Level 1

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I get message that Time Machine backup to my external hard drive failed. How do I fix this? The hard drive is recognized by name in list of drives to back up to.

iMac 21.5″, macOS 10.15

Posted on Jul 1, 2022 12:22 PM

Top-ranking reply

tjk

Level 9

51,126 points

Posted on Jul 1, 2022 2:13 PM

Hi,

Open Disk Utility > select that drive > run First Aid. This may take a long time to complete. Then try backing up with TM again. If the drive cannot be repaired, erase it and run First Aid again. If it still cannot be repaired, it's time to replace the drive.

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