It was with much anticipation that we nabbed the new Fedora Core 7 Live CD in the hope of checking it out first before installing it. Unfortunately, the live CD had other plans.

After starting to load the kernel it happily reported a series of 'buffer IO' errors on my DVD drive. It's a pretty reliable Pioneer DVR-111, and not had a problem with burned disks yet, but nevertheless, I burned another and... got the same result. Ok, let's try the 64-bit Live CD.

Same result.

Hrm, checking the forums it turns out this is a common bug and the solution is to append 'ide=nodma' to the kernel options. So I did.

Same result.

More Here.