You should see a popup box appear asking if you want to repair your library. With Photos not running, hold down the option and command keys while you double-click the Photos app icon. The next thing to try is to repair the Photos app library. Now re-open Photos and see if it’s all back. This location is in your User account under Pictures.

Your first thing to try is to find that file (search for “Photo Library” either in Spotlight or Finder) and put it back in the original location.

Unfortunately, a number of things can cause this file to disappear (including you deleting that file). Instead you’ll see a single file called “Photo Library”. First off, when you import photos into the app, the originals are stored in a hidden folder, and don’t appear in the Pictures folder on your computer.

The MacOS Photos app is really great about helping you manage your photos, but there are a few things to be aware of. I seem to have damaged my Macbook’s Photos library as there are tons of photos in the library but they don’t show the images. Rebuild Mac Photos Library: a reader asks…

How to rebuild a mac