4.7 to 9.4 GB "Understanding DVD" OSTA: Technology Q and A 4,482MB http://www.osta.org/technology/dvdqa/dvdqa6.htm http://www.osta.org/technology/dvdqa/dvdqa6.htm Understanding DVD - Disc Size, Configuration and Capacity http://www.osta.org/technology/dvdqa/dvdqa6.htm http://www.osta.org/technology/dvdqa/dvdqa6.htm