dvd image is in old GB=4,3 net, gross is 4,7 GB
difference comes from fs info and the differece beteween what is posssibel with the dye and what is made in the standart
so ypu wont get more than 4,3 old fashioned GBytes onto the disk.
b.t.w. whats an inch, a gallon and a stone = invalid since mid 70' ies, all over the world
so if Gibibytes will evolve as fast as the metric system it can take a century or so
(do you remember nonexistent 1.44mb floppy disks, still in all bios'es, allthoug it was _never_ correct, not a single day)
*don't we all just love marketing
