On Tue, Feb 19, 2002 at 08:35:34PM +0100, Manuel Bouyer wrote:
> On Tue, Feb 19, 2002 at 09:35:37AM +0100, Noud de Brouwer wrote:
> > i have a ide question..
> > i see my diskinterfaces being downgraded from time to time.
> > 
> > Feb 19 09:09:47 127 /netbsd: wd1: transfer error, downgrading to Ultra-DMA mode
> > 2
> > Feb 19 09:09:47 127 /netbsd: wd1(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 
> > 2 (Ultra/33) (using DMA data transfers)
> > Feb 19 09:09:47 127 /netbsd: wd2(pciide1:0:1): using PIO mode 4, Ultra-DMA mode 
> > 2 (Ultra/33) (using DMA data transfers)
> > Feb 19 09:09:47 127 /netbsd: wd1a: aborted command, interface CRC error writing 
> 
> "interface CRC error" means that the data got corrupted while transfered on
> the IDE bus. This mean thge signal/noise ratio of the bus isn't good enouth,
> and the driver used a lower speed to work around this.
> The cause of this is usually bad cables, or incompatible devices on the bus.

Hmm...the same cable and disks worked fine with Win XP.

Jun-Young

-- 
Bang Jun-Young <junyoung@mogua.com>