I was looking at the command to burn iso image to a dvd. But I couldnt get the name of the device. In the /dev/ I could see cdrom,cdrw,dvd,dvdrw. I am using debian.

When I gave the command, I got the following output

dd if=debian-6.0.7-i386-DVD-1.iso of=/dev/dvdrw dd: opening `/dev/dvdrw': Read-only file system