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Re: IDE with/without DMA on Sun Blade 100

On Sat, Aug 03, 2002 at 04:34:12PM +0200, Olivier Hochreutiner wrote:
> Hi,
> I managed to install Woody on my Sun Blade 100 and it works well.
> There is only a small thing I would like to fix : when the DMA mode is
> enabled I sometime get some errors when I try to read something on a
> CD-ROM with the DVD-ROM drive of my Blade. To avoid this problem I have
> to boot with the option "ide=nodma" but the performance loss is quite
> big.
> So is there a way to disable the DMA only for the DVD drive without
> affecting the hard drive ?
> Note that I use kernel 2.4.19rc3 (the problem is the same with kernel
> 2.4.18) but I did not try any 2.5.x version.

does "hdc=nodma" work? Either that or use hdparm (doesn't require

Debian     - http://www.debian.org/
Linux 1394 - http://linux1394.sourceforge.net/
Subversion - http://subversion.tigris.org/
Deqo       - http://www.deqo.com/

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