Image DVD (ISO) isn't recognised
for Bootcamp I did burn the ISO on a DVD (Using Nero). In the past the iMac (27" EMC 2390) didn't had a problem to recognize it (although it did cost sometimes several attempts before it actually did start to run). Now I get the pop-up the DVD is empty. A movie DVD works perfect as well as a CD. Did burn the ISO again with the same result... Could this be caused by a dirty laser?
I would like to thank you for your advice.