Hi,

I have bought the Audi navigation DVD for my A6 and it works nicely. However, since it's a really expensive piece of product I'd really like to make a backup DVD of it which I'd use in the vehicle and keep the genuine disc somewhere in the house. I tried making an ISO out of it and then burning it onto a normal DVD. I also tried burning to a Dual Layer. I use Nero Burning ROM for the writing process. None of these ways worked in the car - it always says Check Navigation DVD.

Any ideas?

Thanks.