linux-kernel - Re: Abysmal PATA IDE performance

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Message-ID: <45537B09.6020401@seclark.us>
Date:	Thu, 09 Nov 2006 14:01:29 -0500
From:	Stephen Clark <Stephen.Clark@...lark.us>
To:	Arjan van de Ven <arjan@...radead.org>
CC:	"\"J.A.\" Magallón" 
	<jamagallon@....com>,
	Björn Steinbrink <B.Steinbrink@....de>,
	Mark Lord <lkml@....ca>, "" <linux-kernel@...r.kernel.org>
Subject: Re: Abysmal PATA IDE performance

Arjan van de Ven wrote:

>>ata2.01: ATAPI, max UDMA/33
>>ata2.00: configured for UDMA/33 <==== why isn't this 66 or 100 ?
>>===============****
>>    
>>
>
>
>you need a different cable for udma66 than you need for udma33; and a
>certain capacitor to be able to autodetect which you have...
>maybe your laptop maker saved himself $0.05 ;)
>  
>
There is no cable the disk plugs directly into the MB.
How can I force this to udma 66 or higher - the ide driver accepted  
idex=ata66 to control this.

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