I have a friend who would like me to back up dvd-roms for his navigational system in his car. I have read it with dvd decrytper, but it is too big for 1 dvd-r. I cannot locate the file on my hdd with shrink 3.2. Is it even possible to back up dvd-roms such as these with the programs I have mentioned here? Any help on this topic would be appreciated.