I am having a lot of trouble managing files through LR.
Originally I wanted to move all videos on my local HD to my external HD. The video's were in dozens of different folders on the HD, but I thought I'd be able to filter the library to show only "video" files and then move them by dragging into a folder in the "folders" pane.
First I was going to create a home for them in the external HD. But right away I found another problem. When I plug the drive in and LR recognizes it, I am seeing two instances of "STORAGE" (the name of this external drive) in the pane. Each has different folders from that double referenced source
This is problematic. I wish to be able to see only one instance with all the folders that are in that drive. The reason being, I want to move folders, create folders and generally organize the mess that is in that drive, so I can co-organize the mess that is on my local drive, then move all the video's (which might be a separate issue to address).
In the Mac's finder, the structure is all there. I want it to all be there like that in LR. Just show me everything so I can manage the files.
Could you please answer these questions:
Using LR version 5.7.1 on an early 2015 Macbook Pro
I had a similar issue and the reason was a corrupt Catalog.
Try creating a new catalog and import everything using File -> Import from another catalog and then choose this catalog.