From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: ATA support for 4k sector size Date: Thu, 10 Dec 2009 23:26:39 -0800 Message-ID: <4B21F42F.4070400@zytor.com> References: <1235600698-6446-1-git-send-email-matthew@wil.cx> <49A5CBF7.9000501@zytor.com> <20090226025043.GJ1363@mit.edu> <20090226030735.GA16891@parisc-linux.org> <4B21EF54.9070609@daa.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from terminus.zytor.com ([198.137.202.10]:50061 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752046AbZLKH05 (ORCPT ); Fri, 11 Dec 2009 02:26:57 -0500 In-Reply-To: <4B21EF54.9070609@daa.com.au> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: James Andrewartha Cc: "Martin K. Petersen" , Matthew Wilcox , Theodore Tso , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, sandeen@redhat.com On 12/10/2009 11:05 PM, James Andrewartha wrote: > Martin K. Petersen wrote: >>>>>>> "Matthew" == Matthew Wilcox writes: >> >> Matthew> Lowest aligned logical block address=0 >> >> Matthew> This disagrees with Martin's assertion. >> >> The original roadmap was to transition to 4KB sectors in 2006, >> coinciding with the Vista release. >> >> Given how long this has taken (we're now talking ~2011 for GA) it may >> very well be that the alignment knobs will be unused because everybody >> will be using Vista or 7 by then. > > The plan does seem to have changed - WD's shipping 4k sector drives that > are sane and require a drive jumper or tool for WinXP and old cloning > utilities. > > http://techreport.com/discussions.x/18115 > http://wdc.com/en/products/advancedformat/ > http://www.wdc.com/wdproducts/library/whitepapers/en/2579-771430-A00.pdf > Even more important, the alignment can be changed as opposed to being fixed for the manufacture of the disk. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.