Re: Ultra DMA on one drive only? (2.1.90)

Jelle Foks (jelle@flying.demon.nl)
Sun, 29 Mar 1998 21:06:21 +0000 ( )


Hello,

Hey, I've seen the same kind of effect: On a 430FX with two (regular
EIDE-DMA) 4.3GB quantum bigfoots, each on a separate controller cable
(hda & hdc).

When the system boots, the DMA for one of them (hdc) gets switched off
after an IDE interface reset and pause... (kernel 2.0.33 on RH5).

Maybe it's a gneric problem with the DMA code in the linux kernels? A
buffer problem or something?

Jelle.

On Sat, 21 Mar 1998, Don Fisher wrote:

> I just purchased a second UDMA hard drive. My thought was
> to place one on each controller. They both can be enabled
> with hdparm. But when I try and copy from one drive to the
> new one there is a pause, and hdparm now says the dma is
> turned off. The board has a 430TX chip set. I am running
> RedHat 5.0 with a 2.1.90 kernel. the disk drives are Maxtor
> 88488D8 3.5" Ultra DMA.
>
> Thanks for any help or pointers.
> don

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