I've tried several of the cd's in my new iMac and it's spitting out everyone.
Have you any other manufacturers black bottomed cdr's that we can swop these with?
Hi David. In a situation like this whereby your system does not recognise the discs, the easiest solution is to update the firmware for your drive. You should first try and get the lastest firmware for your system here:
http://www.apple.com/support/hardware/
Trying to resolve the mismatch between the discs and the hardware is usually preferable over returning and exchanging.