Subject: Re: install/20894: No obvious way to prevent the EIDE/ATAPI driver using DMA
To: None <>
From: Manuel Bouyer <>
List: netbsd-bugs
Date: 03/26/2003 20:42:51
On Wed, Mar 26, 2003 at 01:28:42AM -0800, wrote:
> >Description:
> My PCMCIA external CD reports being able to support DMA, but probably cant. When accessed by NetBSD, it turns itself off, making install impossible.

the CD itself may have DMA support, but the controller doesn't.
In this case NetBSD won't try to use DMA (and I'm sure it won't try because
there is no DMA support in the pcmcia IDE front-end anyway).
Can you post the relevant boot messages for the controller and drive ?

Manuel Bouyer <>
     NetBSD: 24 ans d'experience feront toujours la difference