One of many questions to come as I migrate to Mac after thousands of years of PC use. I want to migrate photos and Lightroom from PC to Mac. No problem with the software, but I'm really curious about using external drives to do it. There is a nice how-to (http://lightroomers.com/migrating-you-lightroom-catalog-and-photos-to-a-new-computer/1155/) but I'm unclear about the best way to use an external drive. According to the blog, I would install the new version of Lightroom, then copy the catalog, presets and photos to an external drive, then copy that to the Mac. I have several large external drives which are PC formatted (NTFS). I have heard that a Mac can read and copy from an NTFS drive but can't write to it. Because I want to maintain the file structure my photos are in (because that's how Lightroom finds them), I need to transfer all the folders as is, not just the individual photo files. My question: can I do this just using the NTFS drive? In other words, can I just copy the photos folder from the PC to the external drive, then copy that to the Mac, and have all the subfolders and structure remain the same? I'm thinking ahead; my iMac won't even be here for a while, but I'm planning ahead.