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Date:      Sat, 05 Mar 2005 17:11:00 -0700 (MST)
From:      Chris Warren <chris@dawgiestyle.com>
To:        Rob <spamrefuse@yahoo.com>
Cc:        FreeBSD questions <freebsd-questions@freebsd.org>
Subject:   Re: dma/sysctl
Message-ID:  <34821.192.168.1.101.1110067860.squirrel@server>
In-Reply-To: <20050305235826.83478.qmail@web54009.mail.yahoo.com>
References:  <20050305235826.83478.qmail@web54009.mail.yahoo.com>

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Definitely try a different IDE cable before anything else.  Its cheap, and
in my case, it solved the problem.
If it doesn't, then at least you will have eliminated that as a possibility.

Chris

On Sat, March 5, 2005 4:58 pm, Rob said:
> Luciano Musacchio wrote:
>> Hi,
>> I've a fbsd machine that hangs once in a while,
>> I've this en /var/log/messages:
>> ...
>> Mar  5 14:44:58 chiba kernel: ad2: WARNING -
>>   WRITE_DMA UDMA ICRC error (retrying request)
>>   LBA=2949471
>> ...
>>
>> So, this means my hd is about to crash?
>> How can I tell the kernel to reboot on such cases?
>> (via sysctl?)
>
> This is 5.3, right? I bet you would not have such
> problems with 4.X.
>
> My PC instantly crashed at boot with this same
> message. I solved it by adding following to
> /boot/loader.conf:
>    hw.ata.ata_dma="0"
>
> This will force the harddisk to operate in slow
> PIO4 mode, but in my case the DMA trouble disappeared.
>
> Rob.
>
>
>
>
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