I've got 2 usb keys - I can copy files from them, but unable to put anything on them. I've tried the regedit trick and I've tried to format using CMD - diskpart - list disk - select disk * - clean - create partition primary - select partition 1 - active - format fs=NTFS But it doesn't seem to work. How can I unlock it? No important information on it. Can be nuke if that is what it takes to make it usable!