From owner-freebsd-questions  Fri Jan 18 19:45:25 2002
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Date: Fri, 18 Jan 2002 21:45:23 +0000
From: Josh Paetzel <friar_josh@webwarrior.net>
To: James McNaughton <jtm63@enteract.com>
Cc: freebsd-questions@FreeBSD.ORG
Subject: Re: UDMA ICRC error reading fsbn 21778428 of 7149744-7149745 ?
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In-Reply-To: <86vgdzrsz0.fsf@jamestown.21stcentury.net>; from jtm63@enteract.com on Fri, Jan 18, 2002 at 08:10:27PM -0600
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On Fri, Jan 18, 2002 at 08:10:27PM -0600, James McNaughton wrote:
> Is this error:
>  UDMA ICRC error reading fsbn 21778428 of 7149744-7149745
> something to worry about? What does it _really_ mean?
> 
> TIA

What it means is that there was corruption of data on the IDE bus.  
The actual data transfer uses a CRC checksum to detect data 
corruption, and it caught one while doing a transfer on your system.

It COULD be a one time "stars were in the wrong alignment" sort of 
thing.  If you start to see more of them you'll have to decide whether 
you have a bad cable, controller, or drive.

Josh


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