try niyo po ito:
click start then type cmd, then right click po tapos run as administrator
then type po diskpart
Type "list disk" and press Enter
Type "select disk d," replacing the "d" with the drive letter you are working on. Press Enter.
Type "attributes disk clear readonly" and press Enter. After several seconds, Diskpart will inform you that read-only has been cleared.
Type "Exit" and press Enter to close the window.