"Volume not found" I have 3 iphoto_libraries stored in a external disk, while the actual files are in other external disk. Ive moved together iphotolibraries and files but: HOW CAN I TELL THE LIBRARIES WHERE TO FIND THEM NOW?

Question

I have three iphoto_libraries stored in a external disk PASSPORT (one for each trip imovie Im making -Ive managed this way the libraries so to not confuse the trips) while the actual files are in OTHER external disk LACIE. And everything was fine: imovie find each library, could work with it, or iphoto could edit the files.
But one day everything crashed at the same time: i opened iphoto to find 3 different scenarios:
1) iphoto_library GREECE was there, but not the albums i prepared. no events. when double click in any of them: "Volume not found"
2) iphoto_library ITALY was there, and the albums i prepared too, but empty.
in both cases I can only see the photos in 'photos'  because 'events'  shows some events with photo preview and some with no preview, just some kind of preset clipart palm tree, but if i enter the event, photos are there but again: when double click in any item: "Volume not found"
3)  iphoto_library ISRAEL was there, the albums too, when double click in any of them: all OK
The 3 libraries was managed the same way. Meaning: Ive imported photos to iphoto from external disk LACIE in a iphotolibrary stored in another external disk PASSPORT. Also: I don't have unchecked the option "copy to file" or something like that. photos where moved, not copied. Also i have all the movie_libraries in the PASSPORT as well. What happened??
Solution? Nothing yet. Ive moved now all the photo folders from LACIE together in PASSPORT with the iphotolibraries but problem persist:
HOW CAN I TELL THE LIBRARIES WHERE TO LOOK FOR THE VOLUMES NOW?
"Volumes" are the original files aren't them?
Please help. this is so annoying to try and find in the forum, to tricky to explain
I have a Macbook pro retina Yosemite 10.10.1 / iphoto 9.6 (910-29)/ iMovie 10.0.6
THANK YOU
Vicky

Answer 1

The 3 libraries was managed the same way. Meaning: Ive imported photos to iphoto from external disk LACIE in a iphotolibrary stored in another external disk PASSPORT.
This is not clear, especially when you say
I don't have unchecked the option "copy to file" or something like that. photos where moved, not copied.
Especially as the message you're getting is typical of a library where the ' option "copy to file" or something like that' is unchecked.
So it's a simple question:
Are you these Managed or Referenced Libraries?
A Managed Library, is the default setting, and iPhoto copies files into the iPhoto Library when Importing. The files are then stored in the Library package
A Referenced Library is when iPhoto is NOT copying the files into the iPhoto Library when importing because you made a change at iPhoto -> Preferences -> Advanced. (You unchecked the option to copy files into the Library on import) The files are then stored where ever you put them and not in the Library package. In this scenario you are responsible for the File Management.