I have a desktop Mac OS X, and the drive is nearly full. I bought a TB drive [Seagate] and formatted it to Mac OS journal, and added a folder to it in LR, which appears in the Navigator panel. I found that when I tried to drag my 30,000 images from the catalogue to the new folder, they refused to go. I then tried to move the in small batches, and then a large batch froze the computer and now I have 8000 images on the new drive, but many are not linked, and they still seemed to be in the original disc as well. Please help.
LR seems to not do well when moving large numbers of files.
Your best bet is to:
Backup your catalog.
Move/copy the image files using Finder (drag and drop the top-most folders).
Go to the Folders panel in the Library module.
"Find missing" or "update folder location" on the moved folders.
Restore a backup of your catalog file, so all photos are linked and on the original drive.
Then, follow the instructions here under "Part 2 -- Updating Folder Location"