PHOTOS LOST HELP
I updated to OS EL CAPITAN and now I do not see IPHOTO or any of the files associated. I had a very old operating system. Please help! Thousands of pictures lost.
iMac
Try opening the Photos app and see if your photos are showing in there. It may also ask you if you want to migrate your iPhoto Library, if so go ahead and migrate your iPhoto Library.
Get started with Photos for OS X - Apple Support
The Photos app looks like this: