My external hd was always (f

until it randomly changed, I know how
to change drive letters unfortunately f is not available to me. So I
searched and found that a cd drive shows up in the "my computer"
window under devices with removable storage. I can't figure out what
it is I disconnected everything from my computer and it still shows
up. However it does not show up in computer management so I can't
change it's drive letter. Okay I know this sounds convoluted and
crazy but if anyone has any advice of how to remove or rename the
driver for this mystery cd drive it would be greatly appreciated