There are a few reasons why your DVD-RAM drive may not be detected in Toast.

1. You must be using Toast 5 or higher.
2. Toast only supports the built in DVD-RAM drives from Apple
3. Toast will not see a DVD-RAM drive in the same way it sees a CD-recorder. To see the DVD-RAM drive:
a. You must be in the DVD format in Toast
b.Go to “file”
c. Choose “write to DVD-RAM”

You should now be able to write to your DVD-RAM drive.