From owner-freebsd-questions@FreeBSD.ORG  Sun Mar 30 17:05:39 2003
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id B11F737B401
	for <freebsd-questions@freebsd.org>;
	Sun, 30 Mar 2003 17:05:39 -0800 (PST)
Received: from digger1.defence.gov.au (digger1.defence.gov.au [203.5.217.4])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 1A6BB43F75
	for <freebsd-questions@freebsd.org>;
	Sun, 30 Mar 2003 17:05:38 -0800 (PST)
	(envelope-from Alex.Wilkinson@dsto.defence.gov.au)
Received: from dsto-ms2.dsto.defence.gov.au (dsto-ms2.dsto.defence.gov.au
	[131.185.2.150])
	by digger1.defence.gov.au with ESMTP id h2V14fPP014950
	for <freebsd-questions@freebsd.org>;
	Mon, 31 Mar 2003 10:34:42 +0930 (CST)
Received: from muttley.dsto.defence.gov.au (unverified) by
	dsto-ms2.dsto.defence.gov.au
	<T614fdfba2f83b90296092@dsto-ms2.dsto.defence.gov.au>;
	Mon, 31 Mar 2003 09:44:49 +0930
Received: from ednex501.dsto.defence.gov.au (ednex501.dsto.defence.gov.au
	[131.185.2.81])h2V09Vh15022;	Mon, 31 Mar 2003 09:39:31 +0930 (CST)
Received: from squirm.dsto.defence.gov.au ([131.185.75.211]) by
	ednex501.dsto.defence.gov.au with SMTP (Microsoft Exchange Internet Mail
	Service Version 5.5.2653.13)
	id HC7BTJ8J; Mon, 31 Mar 2003 09:39:30 +0930
Date: Mon, 31 Mar 2003 09:39:40 +0930 (CST)
From: "Wilkinson,Alex" <Alex.Wilkinson@dsto.defence.gov.au>
X-X-Sender: wilkinsa@squirm.dsto.defence.gov.au
To: CARTER Anthony <a.carter@cordis.lu>
In-Reply-To: <200303281349.58842.a.carter@intrasoft.lu>
Message-ID: <20030331093544.M63516@squirm.dsto.defence.gov.au>
References: <200303281349.58842.a.carter@intrasoft.lu>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
cc: freebsd-questions@freebsd.org
Subject: Re: UDMA
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
Reply-To: Alex.Wilkinson@dsto.defence.gov.au
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 31 Mar 2003 01:05:41 -0000

I have seen these errors before. It has to do with Electro Magnetic Interference (noise).
Try using different ribbons (ATA33) and see if the errors disappear.

 - aW


	ad0: UDMA ICRC error cmd=read fsbn 61731938
	 retrying
	ad0: UDMA ICRC error cmd=read fsbn 61731938
	 retrying
	ad0: UDMA ICRC error cmd=read fsbn 61731938
	 retrying
	ad0: UDMA ICRC error cmd=read fsbn 61731938