[ltp] hdparm & DVD CD-RW

[Moritz Moeller-Herrmann]

Am Mittwoch, 16. April 2003 23:19 schrieb brianweber4 at attbi.com:
> I have a combo DVD/CD-RW.
>
> In Redhat 9.0 file:/dev I can see: /dev/dvd--->/dev/cdrom--->/dev/scd0
>
> How can I set up hdparm to emable DMA transfers? I see no other link
> after /dev/scdo. Do I need to make a link to /dev/hdX? is so how? if not,
> then what else should I do?

You can use the /proc/ide/hdc/settings interface

"cat /proc/ide/hdc/settings" to see the settings

and e.g. "echo using_dma:1 > /proc/ide/hdc/settings" to change them.