Hi.. I can't be the only one ever to have a 400GB Lightroom folder with the catalog and RAW and side car files on an external drive formatted NFTS . I took the drive out of the computer and put it into a USB drive enclosure. I then took another drive, formatted it using my mac to extended journaled. I then called Apple to ask if there was something I needed to do to copy these files over. They were stymied. While they put me on hold numerous times I figured I would just try to copy the folder over. The Apple care person got back on the phone and said he wasn't sure if it would work. I know others have used PC's with large catalogs that went Mac.. How did they do it? It has been copying for the last 2 hours. I haven't tried to import the new folder into lightroom. I have 2 other drives, each 1TB full of home video's. I will buy a new 1TB drive and repeat the process as above if this way works. Am I missing something? ---------- Update: Opened catalog using lightroom for mac.. each preview has a question mark over it.. missing file. I can see the files in my folder?