i have a usb storage device sandisk 16 gb.. it is write protected when i tried to remove protection by using cmd it shows only one disk (disk 0) in list disk. and using list volume it does not gv any massage after pressing attributes vol clear readonly.. whn i tried regedit and put data base value 0 and reboot . it also doesnt works.. my pendrive is still write protected. plzz help me to out