No, the capacity of a DVD is just under 4,5 GB. DVD disks say 4,7 GB on them, but would you believe the standard method they use for defining capacity is actually billions of Bytes, and not GigaBytes. So 4,7 is on the assumption that for instance a kiloByte is 1000 Bytes which it certainly is not. It is in fact 1024 Bytes :o) File system also takes some space. Dave-so: The usual solution for that problem is switch make of cd disks. Even the finest burner can have trouble with certain makes of disks, particularly rewritables. FOr instance, I can'y use Memorex - a reputable brand - on my cd-rw Plextor, which has an excellent pedigree. My Sony DVD burner has so far never failed to burn perfectly. But I always, always copy the entire contents of the disks I burn to the harddisk of another PC (to a temp dir) to be sure that every single Byte is OK. Doing that with a DVD takes a while but it's worth it. A bad backup is the worst thing in the world. Strictly speaking, you haven't backed up until you've done two copies.