I just recovered files from a USB drive and then attempted to format the drive. However, it said "this disk is write-protected". Checking the permissions showed I had complete access, including both read and write. I used Recuva to recover files that I'd inadvertently deleted, but now I can't move the files that are still on therel (but can copy them), write any new files, or format the drive. Could Recuva have done this or could it be a faulty drive?