Re: [gentoo-user] setting "using_dma" on a BenQ DVD/RW drive

[Roy Wright <royw@cisco.com>]

Rumen Yotov wrote:

>Hi Roy,
>Just guessing here but seems you have SATA drives not IDE, don't
>use/know much about SATA yet ;) but maybe this have something to do with
>the error on activating DMA, from the logs your hard-disk *is* using
>UDMA-133 & PIO4 ?
>Could check BIOS-settings, other thoughts here? Check with 'hdparm'
>setting on your hard (/dev/sdaX or /dev/....).
>All kernel-config you show deals with IDE/ISA settings.
>HTH. Rumen
>  
>
My system has two SATA WD Raptors for hard disks.  I'm
trying to get DMA working for the DVD writer which is IDE.
I'd just like to eliminate the occasionaly hiccup when playing
DVDs.

FYI, AFAIK hdparm does not work with SATA.  From the man
page it is pretty explicit that it is EIDE/IDE only.  When I try
it against my SATA drives it barfs:

royw-gentoo linux # hdparm -i /dev/sda

/dev/sda:
 HDIO_GET_IDENTITY failed: Inappropriate ioctl for device

Thank you,
Roy
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