u/ImogenAndTonic

I've seen a lot of posts about loudly buzzing disc drives, but haven't found anyone with this sound. My drive has always been a little loud but I've just ignored it. But recently it's started making this more "rattle" sounding noise that sounds pretty concerning. It sounds like the disc might be getting scratched to hell in there, but upon removing the disc it seems undamaged. It doesn't happen all the time, only occasionally. Any thoughts on what to do?