I took this video while my drive was making some strange sounds when fed a particular disk;
https://www.dropbox.com/s/vpv6brokgt...iga01.mp4?dl=0
So what exactly is happening here? Where do these noises come from? When I insert a good disk the drive makes no sound, loads nicely. But there are some disks which make disk drives make these strange such sounds.
What causes such sounds?