Start with these three steps
Identify the library
Note the library name and whether it lived in Pictures or on an external disk. Record any recent library move or account change.
Check missing-photo views
Look in Recently Deleted and Hidden, and check the relevant Personal or Shared Library view before changing settings.
Protect the library first
If storage is healthy, keep a separate copy of the library before repair. Stop if copying causes persistent errors or disconnections.
Open the library that contains the work
Photos can use more than one library. Quit Photos, hold Option while opening it, and inspect the available libraries. Choose the expected library rather than creating a new one. A newly created empty library can make a large collection appear to have disappeared.
Only the System Photo Library participates in iCloud Photos. Avoid designating a different library as the system library while comparing copies, because that changes which collection is linked to iCloud. Label the candidates by location and backup date before deciding which one to keep.
Sources: [1] Apple Support
Recover items still retained by Photos
Photos provides a 30-day Recently Deleted window for eligible deleted photographs and videos. Select the required items and recover them while that option exists. Also inspect Hidden and library filters; an image excluded from the current view may still be present.
Check iCloud.com using the same Apple Account if iCloud Photos was enabled. Compare a few known dates and images rather than relying only on the total count. Deletion through iCloud Photos can affect the collection across devices, so another connected device is not automatically an independent backup.
Sources: [2] Apple Support [3] Apple Support
Check whether the originals were local
A MacBook using Optimise Mac Storage may not hold every full-resolution original. Apple warns that a Time Machine backup of such a library may therefore lack those originals. Check what can still be downloaded from iCloud onto healthy storage before assuming a local backup is complete.
Referenced files live outside the Photos library and need to be preserved separately. If you imported photographs without copying them into the library, locate the camera archive or external folder as well. Keep its directory structure intact until you have checked that the recovered library can find the files.
Sources: [4] Apple Support [5] Apple Support [6] Apple Support
Choose repair or backup restoration carefully
The Photos Repair Library tool is intended for library problems; it is not a way to recreate erased originals. Apple asks you to back up the library before repair. If the only library is on unreliable storage, arrange recovery of that storage before attempting an in-place rebuild.
An older Time Machine library can help when the library itself was lost or damaged. Preserve the current collection first: restoring a System Photo Library can return previously deleted images to iCloud. After recovery, export a few original images and play representative videos to confirm that actual media is available.
Sources: [7] Apple Support [4] Apple Support
A realistic view of recovery
- A thumbnail or preview may remain even when its original image is unavailable.
- Repairing a library cannot reverse permanent deletion or replace missing referenced files.
Your questions, answered
Is the Pictures folder always the right place?
Will a library backup include every original?
Can I merge all the libraries immediately?
Need help with the original MacBook?
Describe the model, what happened and which data matters. Data Recovery Lab NZ is an external specialist; ask it to confirm the assessment route for your exact device.
Sources & further reading
Primary and specialist guidance checked 27 October 2026. Features and instructions depend on the model and operating system.