This is how I screwed:
Made a collection in LR, with original files on external hard drive
Created new folder on internal drive and copied the original files there (within LR) Collection now refers to the files on internal drive.
Accidentally erased the folder on internal drive (from Finder) and emptied Trash
Now LR path refers to the non existing folder on the internal drive. The original files are spread over hundreds of folders based on date on the external drive. Any suggestion on how to make LR locate them will be appreciated.
Thanks in advance
How did you create the collection in the first place?
Sorry, my misstake. It's not a collection, it's a key word listing.
Just realized that LR moved the files instead of copying, so they're gone... Going the file recovery path. Thanks for you involvement ManiacJoe!