DMA on optical drive

[Michael Klinosky]

I mentioned that no ATA is involved here. HA! (Shows how much I now 
about the hardware.) I thought that this 'ATA' was some new-fangled 
technology. Well, hdparm stated that these CD drives are atapi.

Mikkel:
> Well, it depends on the drive. Not all optical drives support DMA,
> but any fairly new drive should. You can use hdparm to see the
> current settings, check what the drive supports, and to change the
> current settings. Depending on your BIOS, it may also possible to
> set DMA support for a specific drive. To get good performance from
> your drive, you will want DMA turned on.

I checked the bios - only 'on' and 'off'. No way to select the unit.

hdparm states that these drives support sdma0-2 and mdma0-2, and that 
mdma2 is enabled.

I couldn't figure out which parameter to use to change the setting.

Here is what I'm working from:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=172278
Yes, I'm sure that my kernel wouldn't have this (old) problem. Btw - how 
do I check the kernel version?

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=188377
This is exactly what I get!

ICIM - I have FC 6 and use gnome.