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Time Machine will not recognize external drive for backup

I have a large external drive that I have partitioned to contain Time Machine backups. However, when I open Time Machine and try to select the disk, all I see is "Other AirPort Time Capsule"; in other words, the drive I want to use is not visible.


I have been able to use this same drive (on a different partition) for Carbon Copy Cloner backups with no problems.


Any ideas?

Mac mini, macOS 10.14

Posted on Apr 18, 2020 8:18 AM

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Posted on Apr 18, 2020 10:50 AM

How is the drive formatted? It must be Mac OS Extended (Journaled) with GUID partition table. No other format will work.

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Time Machine will not recognize external drive for backup

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