Max Capacity for DVD+R is 1.2GB when burning data with Nero


I am trying to burn some data onto a DVD+R disk using Nero Express but it keeps showing that the maximum capacity for the disk is only at 1.2GB.

What do I need to do to max the 4.7GB capacity of the disk.

Thanks in Advance!

Can you elaborate a bit on the type of media used (brand and manufacturer details) and the version of Nero that you have?