From owner-svn-src-head@FreeBSD.ORG  Tue Dec  7 23:41:27 2010
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 542EE106564A;
	Tue,  7 Dec 2010 23:41:27 +0000 (UTC) (envelope-from avg@freebsd.org)
Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140])
	by mx1.freebsd.org (Postfix) with ESMTP id 035C58FC13;
	Tue,  7 Dec 2010 23:41:25 +0000 (UTC)
Received: from porto.topspin.kiev.ua (porto-e.starpoint.kiev.ua
	[212.40.38.100])
	by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id BAA11473;
	Wed, 08 Dec 2010 01:41:21 +0200 (EET) (envelope-from avg@freebsd.org)
Received: from localhost.topspin.kiev.ua ([127.0.0.1])
	by porto.topspin.kiev.ua with esmtp (Exim 4.34 (FreeBSD))
	id 1PQ79s-000Hvq-Ug; Wed, 08 Dec 2010 01:41:21 +0200
Message-ID: <4CFEC620.80900@freebsd.org>
Date: Wed, 08 Dec 2010 01:41:20 +0200
From: Andriy Gapon <avg@freebsd.org>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US;
	rv:1.9.2.12) Gecko/20101029 Lightning/1.0b2 Thunderbird/3.1.6
MIME-Version: 1.0
To: Matthew Jacob <mj@feral.com>
References: <201012072046.oB7KkB4L079555@svn.freebsd.org>
	<4CFEAD09.30904@freebsd.org> <4CFEAFA6.4020103@feral.com>
	<4CFEB1AD.70906@freebsd.org> <4CFEBF27.8010203@feral.com>
In-Reply-To: <4CFEBF27.8010203@feral.com>
X-Enigmail-Version: 1.1.2
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
	src-committers@freebsd.org, Bruce Cran <brucec@freebsd.org>
Subject: Re: svn commit: r216269 - head/sys/geom/part
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
	<svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 07 Dec 2010 23:41:27 -0000

on 08/12/2010 01:11 Matthew Jacob said the following:
> Geometry is still important.  Trying booting a USB flash drive on all BIOS' with
> a 63/255 geometry instead of a 64/32 geometry.

Well, I don't know anything about USB...
My point about modern HDDs still stands.

> On 12/7/2010 2:14 PM, Andriy Gapon wrote:
>> on 08/12/2010 00:05 Matthew Jacob said the following:
>>>
>>> On 12/7/2010 1:54 PM, Andriy Gapon wrote:
>>>> on 07/12/2010 22:46 Bruce Cran said the following:
>>>>>     Don't warn if a partition appears not to be aligned on a track boundary.
>>>>>     Modern disks use LBA and create a fake CHS geometry that doesn't have any
>>>>>     relation to the on-disk layout of data.
>>>> You repeated that statement, so I am picking on you :-)
>>>> Can someone show me how/where exactly modern drives fakes CHS geometry?
>>>>
>>> cf cam_calc_geometry
>> But that's not drive firmware code :-)
>> It's us faking those parameters for ourselves for some unknown reason.
>> Stupid us :-) But not the drives / manufacturers.
>>


-- 
Andriy Gapon