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From: "Sergey S. Kostyliov" <rathamahata@php4.ru>
To: Jean-Francois Levesque <jfl@jfworld.net>, linux-kernel@vger.kernel.org
Subject: Re: UDMA problem with Maxtor 7200rpm disk
Date: Thu, 20 Dec 2001 12:10:51 +0300
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> Hi!
>
> I have a problem regarding my new Asus A7V266 board with VIA KT266 chipset.
>  Byron Stanoszek told me to ask my problem to this list so here it is :
>
> My hard drive is a Maxtor 5T030H3 ATA DISK drive (30 gig).  The problem is
> that I'm not able to read more than 7 MB/sec :

Hi,

I have exactly the same problem with 2.4.2 (RH Linux 7.1 - IIRC)
and IBM DTLA - 307040
I think the problem is in VIA82CXX support in 2.4.2
At least for vt8233
With current 2.4.16 (and 2.4.17-rc2) my disk works realy nice (37-38 Mb/s)

So I think you must get new kernel
and recompile it with
VIA82CXX support:
CONFIG_BLK_DEV_VIA82CXXX=y
> [root@xyz jfl]# /sbin/hdparm -d1 -X66 /dev/hda
btw please use 
/sbin/hdparm -d1 -X69 /dev/hda
instead (if you need UATA100)

			Best regards,
			Sergey S. Kostyliov <rathamahata@php4.ru>
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