[CentOS] CentOS 6 x86_64 DVD doesn't boot

[Barry Brimer]

> I downloaded the CentOS 6 x86_64 DVD ISOs and burned the first image to
> a rewritable DVD.  When I tried to boot my new home server off it, it
> didn't, and then this was printed to the screen:
>
> ETCDisolinux: Found something at drive = EF
> No DEFAULT or UI configuration directive found!
> boot:
>
> The same disc works fine in my 4 year old HP laptop, and when installing
> CentOS 6 as a KVM.

By any chance is the drive that does not work *NOT* a CDRW drive? 
Sometimes CD-ROM drives do not like reading rewriteable media.

Barry