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Portable Hard drive automatically disconnecting

I am very careful to properly eject my portable hard drives. But lately I have had two of them automatically disconnecting and saying disc not properly disconnected and they have all my photos on them and now I cannot access them.

MacBook Pro 13″, macOS 10.15

Posted on Jan 30, 2021 2:29 AM

Top-ranking reply

TonyCollinet

Level 7

23,972 points

Posted on Jan 30, 2021 3:27 AM

Is the external drive correctly set up for using with a photos library?

It must be formatted APFS or MacOS extended (journaled) (preferred for spinning drives)
It Must not be (or have been) used for time machine.
It must have the 'ignore ownership" checkbox ticked.
It should not be on a memory stick, SD or similar.
It must also not be a network drive (a direct connection is required - eg USB or Thunderbolt).
File sharing services such as iCloud Drive, Drop box, Onedrive etc are not compatible with Photos libraries.
It stands to reason that if you want any sort of reasonable performance it should be a fast drive with a fast connection.

See

https://support.apple.com/en-gb/HT201517

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Portable Hard drive automatically disconnecting

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