On Mon, 14 Feb 2000, Frederick Bruckman wrote:

> On Mon, 14 Feb 2000, Jonathan R. Hinds wrote:
> 
> > dmesg says the follow about the controller and hard drive:
> > 
> > wdc0 at isa0 port 0x1f0-0x1f7 irq 14
> > wd0 at wdc0 channel 0 drive 0: <QUANTUM FIREBALL1280A>
> > wd0: drive supports 8-sector pio transfers, lba addressing
> > wd0: 1222MB, 2484 cyl, 16 head, 63 sec, 512 bytes/sect x 2503872 sectors
> > wd0: drive supports PIO mode 4, DMA mode 2
> > 
> > Does this mean that it is using DMA? I guess that I will try another hard
> > drive and see what happens.
> 
> Guess so. I would try "de-rating" to DMA mode 1, in the kernel config,
> to try and work around the bug. PIO mode 3, DMA mode 1 is plenty fast,
> if it works.

I tried a Fujitsu 2.6gig hard drive and the machine was still horribly
slow. I am compiling a kernel now with wd0 0x0f9b flags (are these correct
for PIO 3, DMA 1?) over nfs to see if that would speed anything up. Its
been going for over 12 hours, so I guess not. 

--jon