On Tue, May 21, 2002 at 11:18:11PM +0100, Chris Lloyd wrote:
> On Wed, May 22, 2002 at 12:15:32AM +0200, Manuel Bouyer wrote:
> > On Tue, May 21, 2002 at 10:57:47PM +0100, Chris Lloyd wrote:
> 
> > > Anyone know what causes this?
> > 
> > What kind of IDE controller is it ?
> 
> Sorry, it's a:
> 
> pciide0 at pci0 dev 7 function 1: Intel 82371AB IDE controller (PIIX4) (rev. 0x01)
> pciide0: bus-master DMA support present
> pciide0: primary channel wired to compatibility mode
> wd0 at pciide0 channel 0 drive 0: <Maxtor 91301U3>
> wd1 at pciide0 channel 0 drive 1: <Maxtor 90840D5>
> pciide0: primary channel interrupting at irq 14
> wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (using DMA data transfers)
> wd1(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 2 (using DMA data transfers)
> pciide0: secondary channel wired to compatibility mode
> atapibus0 at pciide0 channel 1
> cd0 at atapibus0 drive 0: <CD-RW  CRX100E, , 1.0m> type 5 cdrom removable
> cd1 at atapibus0 drive 1: <TOSHIBA DVD-ROM SD-M1212, 6900104038, 1R14> type 5 cdrom removable
> cd1: 32-bit data port
> cd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2
> pciide0: secondary channel interrupting at irq 15
> cd0(pciide0:1:0): using PIO mode 4, DMA mode 2 (using DMA data transfers)
> cd1(pciide0:1:1): using PIO mode 4, Ultra-DMA mode 2 (using DMA data transfers)

Hum the intel controllers are usually good and quite well supported.
Could you try to swap cd0 and sw1 (have the DVD as master) ?

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
--