Um - that is strange - i don't see any ide driver in the Nvidia 1.0-0261 driver package. Only nvaudio, nvgart and nvnet. Did i miss something?. I use the native kernel driver. Do i have a choice?
hdparm -d <device> did tell "using_dma = 1 (on)", that i do remember. The whole info (-I) i'll have a look at when i can do a reboot, the burner is in my old box right now.
Oh - and i now got Windows installed - if i now eaven find the cd that was shipped with the burner, i'll do a test in Windows...