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Date:      Tue, 01 Feb 2005 04:47:31 +0100
From:      cpghost <cpghost@cordula.ws>
To:        Francisco Reyes <lists@natserv.com>
Cc:        FreeBSD Questions List <questions@freebsd.org>
Subject:   Re: WRITE_DMA UDMA ICRC ERROR
Message-ID:  <41FEFBD3.9010202@cordula.ws>
In-Reply-To: <20050131220910.O83894@zoraida.natserv.net>
References:  <20050131201532.W60910@zoraida.natserv.net> <20050201014014.GA53676@muva> <20050131220910.O83894@zoraida.natserv.net>

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Francisco Reyes wrote:

>
> On Tue, 1 Feb 2005, Santo Natale wrote:
>
>> check if yours new hd is connected through a 80 pin ide cable ( for 
>> UDMA speed >= 66 ).
>
>
>>> Jan 30 12:52:24 zoraida kernel: ad2: WARNING - WRITE_DMA UDMA ICRC 
>>> error
>>> (retrying request) LBA=52551839
>>> Jan 30 13:08:36 zoraida kernel: ad2: WARNING - WRITE_DMA UDMA ICRC 
>>> error
>>> (retrying request) LBA=88194655
>>
>
>
> In the mean time how could I decrease the UDMA setting so it operates 
> at a lower speed?


Use atacontrol(8):

# atacontrol mode 0
Master = UDMA66
Slave  = BIOSPIO

# atacontrol mode 0 udma33 biospio

# atacontrol mode 0
Master = UDMA33
Slave = BIOSPIO

> It probably will be a few days before I get to stop by the computer 
> store.
>
> Most lines are simply warnings, but there area a few errors. This is 
> just a backup drive (ie every X number of hours backup some data from 
> my primary drive) so it's not too much of a problem to slow it down 
> temporarily.

They are warnings, but a UDMA speed mismatch can bite you when you least 
expect it :)

Cheers,
-cpghost.

-- 
Cordula's Web. http://www.cordula.ws/



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