I used DVD decrypter to make a back of my D3 Nav disc but the discs don't work. I followed the instructions on an earlier post but no luck. I had decrypter in the correct mode for reading and then writting but when finished I could not even view what was on the disc in my computer to see if all the files transfered??? Does anyone have a better method of making a backup copy of these disc's.

Use DVD decrypter in ISO-read mode to rip a disk image to your computer.

Then use NERO to record the disk image to a dual layer writable DVD. Open Nero, select "Burn image to disk" and select the disk image for the nav disk and go.

This works, I have already done it and confirmed that it works with no problems what so ever.

DVD decrypter works fine for ripping the image, maybe it's just not suited to burning the image back on to a disk...

If you do a search, there are already quite a number of topics discussing the methods of copying the nav disk.

I have NERO so I will give that a try thanks.