My question was a follow on from my (& your) earlier response saying either a CD or DVD is suitable for system repair disk media.Just curious. If you have a problem with a System Repair DVD as opposed to CD then wouldn't you expect problems using the Install DVD for the same purpose?
Please correct me if I misunderstood your question.
The only problem here was that the DVD had been previously formatted. To create the system repair disc the CD or DVD has to be unformatted (blank).