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Apple time machine

setting up new disk, got an error message saying "there was an error preparing Disk. Couldn't unmount disk."

iMac Line (2012 and Later)

Posted on Mar 31, 2022 10:39 PM

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Posted on Apr 1, 2022 2:25 AM

Use the HFS Journaled with GUID Partition Map for Time Machine Backup in El Capitan

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Level 10

85,153 points

Use the HFS Journaled with GUID Partition Map for Time Machine Backup in El Capitan

Level 10

85,153 points

You are welcome and thank you too.

Glad to be of assistance

Do come back to the Apple Support Communities ( ASC ) in the future, if / or when additional question may arise

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That worked - thanks!

Apple time machine