Welcome to the forums.
Try this. Right click on the drive and select properties. Then to hardware tab, select the device and select properties again. If you look at the policies tab here everything is grayed out. Go back to the general tab and select 'change settings'. On that policies tab you should be able to change things if you wish.
Hope this works for you.
Edit: You may have to click continue at the UAC prompt. Funny, I got no UAC prompt the first time I tried it, but have twice since.