From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1S4NRF-00041X-Af for garchives@archives.gentoo.org; Mon, 05 Mar 2012 02:14:13 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 50CC9E0A5A; Mon, 5 Mar 2012 02:14:00 +0000 (UTC) Received: from svr-us4.tirtonadi.com (svr-us4.tirtonadi.com [69.65.43.212]) by pigeon.gentoo.org (Postfix) with ESMTP id 19648E0663 for ; Mon, 5 Mar 2012 02:12:06 +0000 (UTC) Received: from mail-vx0-f181.google.com ([209.85.220.181]) by svr-us4.tirtonadi.com with esmtpsa (TLSv1:RC4-SHA:128) (Exim 4.69) (envelope-from ) id 1S4NPC-003P7A-KV for gentoo-user@lists.gentoo.org; Mon, 05 Mar 2012 09:12:06 +0700 Received: by vcge1 with SMTP id e1so2204401vcg.40 for ; Sun, 04 Mar 2012 18:12:04 -0800 (PST) Received-SPF: pass (google.com: domain of pandu@poluan.info designates 10.52.34.109 as permitted sender) client-ip=10.52.34.109; Authentication-Results: mr.google.com; spf=pass (google.com: domain of pandu@poluan.info designates 10.52.34.109 as permitted sender) smtp.mail=pandu@poluan.info Received: from mr.google.com ([10.52.34.109]) by 10.52.34.109 with SMTP id y13mr31731740vdi.4.1330913524077 (num_hops = 1); Sun, 04 Mar 2012 18:12:04 -0800 (PST) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.52.34.109 with SMTP id y13mr27210428vdi.4.1330913524063; Sun, 04 Mar 2012 18:12:04 -0800 (PST) Received: by 10.220.58.200 with HTTP; Sun, 4 Mar 2012 18:12:03 -0800 (PST) Received: by 10.220.58.200 with HTTP; Sun, 4 Mar 2012 18:12:03 -0800 (PST) In-Reply-To: <20120305000736.245b9497@khamul.example.com> References: <20120305000736.245b9497@khamul.example.com> Date: Mon, 5 Mar 2012 09:12:03 +0700 Message-ID: Subject: Re: [gentoo-user] Re: Gentoo on a Dell XPS 13 Ultrabook From: Pandu Poluan To: gentoo-user@lists.gentoo.org Content-Type: multipart/alternative; boundary=20cf30780c5cd41bb704ba7573c0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - svr-us4.tirtonadi.com X-AntiAbuse: Original Domain - lists.gentoo.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - poluan.info X-Archives-Salt: 4d204c3c-7965-432e-ba03-6809059a46a8 X-Archives-Hash: dc4da91249eec81fe37b6810106dc1cf --20cf30780c5cd41bb704ba7573c0 Content-Type: text/plain; charset=UTF-8 On Mar 5, 2012 5:10 AM, "Alan McKinnon" wrote: > > > Correct. Those drives are all the same style as you've > been using for years. If partitions start at 63, that's just an msdos > convention. For reasons I've never understood, Windows liked to reserve > the first 32k for some purpose or other. > Partitions start at sector 63 because traditionally that's the first sector of the second cylinder. If the partition starts at a lower sector, then the metadata of the filesystem might get split between two cylinders, causing a performance impact due to drive head repositioning (older -- like, *really old* drives -- have slow and inaccurate actuators; repositioning heads takes time because after moving the heads, the location needs some fine tuning by reading some calibration data embedded in every cylinder). Rgds, --20cf30780c5cd41bb704ba7573c0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable


On Mar 5, 2012 5:10 AM, "Alan McKinnon" <alan.mckinnon@gmail.com> wrote:
>
>
> Correct. Those drives are all the same style as you've
> been using for years. If partitions start at 63, that's just an ms= dos
> convention. For reasons I've never understood, Windows liked to re= serve
> the first 32k for some purpose or other.
>

Partitions start at sector 63 because traditionally that's the first= sector of the second cylinder. If the partition starts at a lower sector, = then the metadata of the filesystem might get split between two cylinders, = causing a performance impact due to drive head repositioning (older -- like= , *really old* drives -- have slow and inaccurate actuators; repositioning = heads takes time because after moving the heads, the location needs some fi= ne tuning by reading some calibration data embedded in every cylinder).

Rgds,
=C2=A0

--20cf30780c5cd41bb704ba7573c0--