linux-kernel - Re: [PATCH] Add quirk to set AHCI mode on ICH boards

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Message-ID: <20071110112029.GA25827@citd.de>
Date:	Sat, 10 Nov 2007 12:20:29 +0100
From:	Matthias Schniedermeyer <ms@...d.de>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, Mark Lord <liml@....ca>,
	Riki Oktarianto <rkoktarianto@...il.com>,
	linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...e.de>,
	linux-ide@...r.kernel.org
Subject: Re: [PATCH] Add quirk to set AHCI mode on ICH boards

On 09.11.2007 22:08, Jeff Garzik wrote:
> Matthias Schniedermeyer wrote:
>> And on the topic of "broken" BIOSes. I have a little empathy for the MB 
>> manufactures as non-RAID AHCI royaly screws Windos, so not supporting it 
>> reduces their support costs enough to overlook screwing the non-windos 
>> faction.
>
> non-RAID AHCI works just fine on Windows.

Last i know is that Intel doesn't provide an AHCI driver for the 
non-RAID version. (For whatever political reason). That is even 
documented in the german "c't", they even had an articel about "patching 
in the Device-IDs" so the RAID-AHCI driver accepts the non-RAID AHCI 
chipsets.

And i can second that, when i configure my @home MB (ASUS P5B = non-RAID) 
to AHCI neither XP nor Vista work.

@work i tried to install Vista on an AHCI-configured machine and aborted 
that "expriment" after about 2 hours. In IDE-mode it took Vista about 3 
Minutes to reach the point where i aborted the AHCI experiment.

So i must say: My milage varies.

Bis denn

-- 
Real Programmers consider "what you see is what you get" to be just as 
bad a concept in Text Editors as it is in women. No, the Real Programmer
wants a "you asked for it, you got it" text editor -- complicated, 
cryptic, powerful, unforgiving, dangerous.

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