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From: Jeff Garzik <jgarzik@pobox.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andries Brouwer <aebr@win.tue.nl>,
	Andre Hedrick <andre@linux-ide.org>,
	Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>,
	Lionel Bergeret <lbergeret@swing.be>,
	JunHyeok Heo <jhheo@idis.co.kr>,
	Linux Kernel Development <linux-kernel@vger.kernel.org>,
	linux-ide@vger.kernel.org
Subject: Re: [PATCH] Bogus LBA48 drives
Date: Thu, 01 Apr 2004 13:24:11 -0500	[thread overview]
Message-ID: <406C5E4B.4020505@pobox.com> (raw)
In-Reply-To: <Pine.GSO.4.58.0404010933190.12148@waterleaf.sonytel.be>

Geert Uytterhoeven wrote:
> On Wed, 31 Mar 2004, Jeff Garzik wrote:
> 
>>Andries Brouwer wrote:
>>
>>>Hmm. I read in my copy of ATA7:
>>>
>>> 6.16.55 Words (103:100): Maximum user LBA for 48-bit Address feature set
>>> Words (103:100) contain a value that is one greater than the maximum LBA
>>> in user accessable space when the 48-bit Addressing feature set is supported.
>>> The maximum value that shall be placed in this field is 0000FFFFFFFFFFFFh.
>>> Support of these words is mandatory if the 48-bit Address feature set is supported.
>>>
>>>Do you read differently?
>>
>>The errata is, one needs to check that field for zero, and use the other
>>one if so...
> 
> 
> Which is not sufficient for `my' drives, since I get disk errors if I just use
> the other capacity field and don't disable LBA48 completely.
> 
> I'll check the ATA specs myself, if I find some time...

If it's reporting the "48-bit feature set supported" but doesn't really 
support it, I'd vote for broken drive :)  Maybe check for a firmware 
update on the manufacturer's web site?

	Jeff





      reply	other threads:[~2004-04-01 18:24 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-03-30 15:22 [PATCH] Bogus LBA48 drives Geert Uytterhoeven
2004-03-30 15:26 ` Geert Uytterhoeven
2004-03-30 15:28 ` Geert Uytterhoeven
2004-03-30 15:51 ` Bartlomiej Zolnierkiewicz
2004-03-30 16:38 ` Andre Hedrick
2004-03-30 16:50   ` Jeff Garzik
2004-03-31 18:34   ` Andries Brouwer
2004-03-31 18:58     ` Jeff Garzik
2004-04-01  9:06       ` Geert Uytterhoeven
2004-04-01 18:24         ` Jeff Garzik [this message]

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