From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Martin K. Petersen" Subject: Re: ATA support for 4k sector size Date: Fri, 11 Dec 2009 02:32:46 -0500 Message-ID: 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=us-ascii Return-path: Received: from acsinet12.oracle.com ([141.146.126.234]:29125 "EHLO acsinet12.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757368AbZLKHdr (ORCPT ); Fri, 11 Dec 2009 02:33:47 -0500 In-Reply-To: <4B21EF54.9070609@daa.com.au> (James Andrewartha's message of "Fri, 11 Dec 2009 15:05:56 +0800") 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 , "H. Peter Anvin" , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, sandeen@redhat.com >>>>> "James" == James Andrewartha writes: >> 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. James> The plan does seem to have changed - WD's shipping 4k sector James> drives that are sane and require a drive jumper or tool for WinXP James> and old cloning utilities. The disk vendors have agreed to transition no later than 2011. There are definitely drives coming out with 4KB physical blocks before then. There has been a lot of discussion of the merits of shipping 1-aligned drives by default given that Vista and Windows 7 handle alignment correctly. I don't think there has been any firm decisions in IDEMA wrt. 0 vs. 1-aligned. It may be up to each vendor's discretion, target market segment, etc. -- Martin K. Petersen Oracle Linux Engineering