The system (Mac) sees the external drive and if I use my other catalog it updates fine. If I eject it from the original catalog, it shows missing files and when I plug it back in it automatically updates that the files are no longer missing. I tried exporting a file using the new catalog and that was successful. But I still can't see the drive to import from.
I just did a test import to a folder on the external from my main drive which was successful. I now see the drive in the library module but only the folder that I added with the import. I can't see any other folders on that drive. So basically I still can't import from that drive.