The disc is any disc and they are commercial
When I put the disc in I can hear it click and then spin for about 15 seconds, then after a short time it stops.
In finder if I dub/click it it spins a short time then a studdering sound like a teletype. When I try to eject it by the button I get nothing but if I click on eject on the computer it says it can't be ejected because Finder is using it. I have tried 3 different cd writers a LG Slim portable DVD writer {New}
a new CD Burner/DVD/BlueRay portable and a LG Super MultiDisc .