|Note that when it was FAT32 it could be used also with a Mac but now it is NTFS, it cannot. As long as it is NTFS, it is good for Windows and Linux, but not the Mac (unless there has been a recent change in this).|
Are you always remembering to use the 'Safely Remove Hardware' feature before unplugging it? If not, then that may be why you are having trouble.
I hope that Phil's suggestion helps. I would be interested in saving that information if it does.
You have to be a little bit crazy to keep you from going insane.