I have an external hard drive that I copy the movies to. On this computer, the drive is working fine. All the folders and shows are listed. I safely removed the drive and plugged it into the other computer. The main folder was listed, but I could not open it. No subfolders were listed, nor were any of the files. I scanned the drive and no errors were shown. I safely removed the drive and opened it on this computer and all the files and folders were shown. Back to the other computer and no changes, the files and subfolders were missing. After rebooting the computer, everything is there, but I don't have permission to view or access the folders, even as administrator.