Why? I cannot correct that by the usual means of selecting attributes then changing them. so 2 questions, why has it suddenly done that and second how do I correct it. By the way it is Windows 10
Are you sure you've not got a poltergeist in your house that keeps causing these mysterious problems? :facepalm:
No, just a thicko! :red:
You could pick the bones of this thread and you might get lucky:
https://superuser.com/questions/543067/why-is-my-usb-flash-drive-now-read-only
If it's affecting more than one drive, have you tried using a different USB port?