[Joeycam]

The circle I am referring to is actually a visible outline of approx a 1/4" diameter circle. It looks as if someone purposely scratched the surface of the disk but it is a perfect circle. It is almost as if someone took the end of a pencil and removed the eraser then pressed the barrel of the eraser holder with perfect even pressure into the disk leaving the outline of the barrel in the write surface of the disk.