Bootable DVD DL, Mac OS X 10.10 Yosemite Full OS Install, Reinstall, Recovery and Upgrade
- ...n the DVD's surface. Second test is "Reading Byte-for-Byte", to check for any errors on disc contents. If you will have any errors playing the DVD, you can RETURN it anytime BUT PLEASE do not chose the reason as "Defective". A non-playing disc is not a sign of a “bad” disc, but rather just means that particular player/ROM cannot play it..