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We recommend using a separate drive specifically for Time Machine backups The Photos app will not let you save photo libraries on the same drive you use for Time Machine backups and you will get corrupted libraries.
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The reason for this is because formatting part of your drive to use for Time Machine will sometimes cause issues with other Mac apps like Photos. How To Format Your External Hard Drive for Mac or WindowsĪ few words word of caution before you set up your drive is to know that if you are planning to schedule Time Machine backups on your Mac, it is better to use a completely separate drive for that task.
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