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Date: Mon, 30 Aug 2004 10:55:04 +0200
From: "Karel J. Bosschaart" <karelj@kayjay.nl>
To: John <summer@cds.merseine.nu>
Message-ID: <20040830085504.GA1843@kayjay.xs4all.nl>
References: <200408301318.40078.summer@computerdatasafe.com.au>
	<b2807d040408292241fa24fbc@mail.gmail.com>
	<4132C51F.4090203@computerdatasafe.com.au>
	<b2807d0404082923395551577b@mail.gmail.com> <4132D526.2010007@cds.merseine.nu>
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cc: Subhro <subhro.kar@gmail.com>
cc: "freebsd-questions@FreeBSD. ORG" <freebsd-questions@freebsd.org>
Subject: Re: Which disk is which
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On Mon, Aug 30, 2004 at 03:20:06PM +0800, John wrote:
> Subhro wrote:
> 
> >What do u mean by difference?
> > 
> >
> 
> That page does not mention da devices at all.
> 
> >The device ad represents a IDE/ATA disk and the da device represents a
> >SCSI disk. As you have got one IDE hard disk and one SCSI hard disk in
> >your box, its showing up as ad0 and da0. But as you say that there is
> >no SCSI in that box, then something seems to be wrong. Check your BIOS
> >and disable any onboard SCSI controllers if present
> > 
> >
> There are no SCSI controllers. It's your basic cheap Acer desktop 
> Pentium III of a few years ago.
> 
> As I said already, "I have no SCSI in this box."

External USB disks and USB pens (using umass) will also show up as a da0 
device. Perhaps you have one of them attached while booting? 

Karel.