linux-kernel - Re: ATA 4 KiB sector issues.

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Message-ID: <4B961D8F.3010500@ziu.info>
Date:	Tue, 09 Mar 2010 11:06:07 +0100
From:	Michal Soltys <soltys@....info>
To:	Mikael Abrahamsson <swmike@....pp.se>
CC:	Tejun Heo <tj@...nel.org>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Daniel Taylor <Daniel.Taylor@....com>,
	Jeff Garzik <jeff@...zik.org>, Mark Lord <kernel@...savvy.com>,
	tytso@....edu, "H. Peter Anvin" <hpa@...or.com>,
	hirofumi@...l.parknet.co.jp,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>, irtiger@...il.com,
	Matthew Wilcox <matthew@....cx>, aschnell@...e.de,
	knikanth@...e.de, jdelvare@...e.de
Subject: Re: ATA 4 KiB sector issues.

Mikael Abrahamsson wrote:
> On Mon, 8 Mar 2010, Tejun Heo wrote:
> 
>>  http://ata.wiki.kernel.org/index.php/ATA_4_KiB_sector_issues
> 
> Excellent summary.
> 
>> C-2. Windows XP depends on the traditional partition layout.
> 
> Is this really true? WD ships their EARS drives with an alignment tool 
> that as far as I can understand, moves the partition so
> it's aligned to 4KiB:
> 

XP SP2 (or later) can boot from any place, including logical partitions 
(tested that recently). Most important thing is "hidden sectors" (recent 
chain.c32 can set that automatically through ntldr and/or sethidden 
options). No idea about pre-SP2 ; Win 2000 will not boot from "misaligned" 
(with reference to cylinder boundary) partition.

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