I use Knoppix 3.7, a HDD install.

Using the default 2.4.27 Kernel it works with my Mad Dog USB 7-in-1 external USB DVD-RW dual layer drive just fine. I can play DVDs, burn CDs and DVDs. Everything.

But using the 2.6.9 kernel, it doesn't see it as a writable device. This is because kernel 2.6.9 has a bug in it that causes the drive to be mis-reported as a Revoltec external hard drive.

Perhaps this bug got fixed in later kernel versions.

sakiZ