This problem is caused by the fact that you are not using the real cdrecord but a defective fork.
In special, there is absolutely no support for DVD Dual layer media in the fork.
Get the real program:
ftp://ftp.berlios.de/pub/cdrecord/alpha/
http://cdrecord.berlios.de
or as a ubuntu package from:
https://launchpad.net/~brandonsnider/+archive/cdrtools/+packages
This problem is caused by the fact that you are not using the real cdrecord
but a defective fork.
In special, there is absolutely no support for DVD Dual layer media in the fork.
Get the real program:
ftp://ftp. berlios. de/pub/ cdrecord/ alpha/
http:// cdrecord. berlios. de
or as a ubuntu package from:
https:/ /launchpad. net/~brandonsni der/+archive/ cdrtools/ +packages