I have always had intermittent problems using rewritable disks (CDs and DVDs). Sometimes they are recognized and work. Sometime not. Video on rewritable DVDs often will not play back in all of my household DVD players. And I should also mention the slower burning speeds that they usually require. So to sum up, I don't buy those things anymore. And it works out okay since even Taiyo-Yuden CDs and DVDs can be bought for 25 to 30 cents each nowadays. Besides, that LiveCD you want to make should be kept anyway. It is a very useful utility for repairs to hard drive based Fedora systems.
P.S.: Here is some more bad news. Even when you use a record-only disk, I think you should choose the option to finalize the session (no more burning allowed on that disk) when the most reliable results are desired. Not codified law. Just me.
P.P.S.: More. Sometimes Fedora DVDs created from ISO files work more reliably if burned at less than the maximum rated speed of the disk. I have burned many at full speed and they usually work. But I also slow down sometimes (maybe 1/2 x max).
Last edited by stoat; 29th April 2008 at 12:31 PM.