So, before any steps for photo recovery on mac, you should check your pictures folder to make sure if your photos are still there. In a sudden, you noticed that the photos lost or disappeared from your mac, but in fact, they are not gone. People are accustomed to updating Mac to a new system by clicking on the 'Update All' option in the App Store, which will also automatically update other apps like Photos. Restore Missing Photos after Mac Update to Big Sur or Catalinaīefore Recovery, Check Your Pictures Folder First.Restore Photos after Mac Update with Time Machine.Recover Photos Disappeared from Mac via Photo Library Repair.Recover Lost Photos after Mac Update from Recently Deleted.Fast Way to Recover Lost Photos on Mac After Update.