Hi, I have been searching the site for some info on the following but came to a dead end. I am trying to back up my DVD DL sat nav disk from my Toyota car. I have managed to create the image OK using both Nero and DVDdecryter and have transferred back to a DL disk (image 6.8GB) but the disk is not recognised. I have noticed that the original disk format is DVD-ROM (which I believe is standard for most DVD's) and I am trying to burn to a DL +R DVD. I have burnt the backup disk using both the tools above on seperate disks. Has anyone done this before??