From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1KapkH-0007GF-TF for mharc-grub-devel@gnu.org; Wed, 03 Sep 2008 06:37:54 -0400 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KapkE-0007F1-5L for grub-devel@gnu.org; Wed, 03 Sep 2008 06:37:50 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Kapk9-0007Cq-MR for grub-devel@gnu.org; Wed, 03 Sep 2008 06:37:49 -0400 Received: from [199.232.76.173] (port=39134 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Kapk9-0007Ca-4P for grub-devel@gnu.org; Wed, 03 Sep 2008 06:37:45 -0400 Received: from mail-in-17.arcor-online.net ([151.189.21.57]:58380) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1Kapk9-0000C1-7i for grub-devel@gnu.org; Wed, 03 Sep 2008 06:37:45 -0400 Received: from mail-in-11-z2.arcor-online.net (mail-in-11-z2.arcor-online.net [151.189.8.28]) by mail-in-17.arcor-online.net (Postfix) with ESMTP id 0B6732BCF42 for ; Wed, 3 Sep 2008 12:37:42 +0200 (CEST) Received: from mail-in-01.arcor-online.net (mail-in-01.arcor-online.net [151.189.21.41]) by mail-in-11-z2.arcor-online.net (Postfix) with ESMTP id D18643465AA for ; Wed, 3 Sep 2008 12:37:41 +0200 (CEST) Received: from cerberus.olympus (dslb-088-074-226-172.pools.arcor-ip.net [88.74.226.172]) (Authenticated sender: blubberdiblub@arcor.de) by mail-in-01.arcor-online.net (Postfix) with ESMTP id A0B59105D5B for ; Wed, 3 Sep 2008 12:37:41 +0200 (CEST) Received: from cerberus.olympus ([192.168.1.3] ident=foobar) by cerberus.olympus with esmtp (Exim 4.69) (envelope-from ) id 1Kapk4-0005Yj-Pf for grub-devel@gnu.org; Wed, 03 Sep 2008 12:37:40 +0200 From: bitbucket@arcor.de To: The development of GRUB 2 Date: Wed, 3 Sep 2008 12:37:40 +0200 User-Agent: KMail/1.9.9 References: <48BD4C52.6040308@gmail.com> <48BDD573.5010809@gmail.com> <1220403254.23879.81.camel@localhost> In-Reply-To: <1220403254.23879.81.camel@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Message-Id: <200809031237.40465.bitbucket@arcor.de> X-Virus-Scanned: ClamAV 0.93.3/8145/Wed Sep 3 08:00:57 2008 on mail-in-01.arcor-online.net X-Virus-Status: Clean X-detected-kernel: by monty-python.gnu.org: Linux 2.4-2.6 Subject: Re: Sendkey patch X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GRUB 2 List-Id: The development of GRUB 2 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Sep 2008 10:37:51 -0000 On Wednesday 03 September 2008, Javier Mart=C3=ADn wrote: > El mi=C3=A9, 03-09-2008 a las 02:08 +0200, phcoder escribi=C3=B3: > > Hello, again. > > > > Javier Mart=C3=ADn wrote: > > > We have 63 sectors =3D 32256 bytes (sectors range from 0 to 63 and the > > > first is used by the MBR). > > > > I've just rechecked on my system. My first partition begins at sector > > number 63. This is the value I've seen at most systems. So last usable > > sector is 62. Sector 0 is MBR. So we have 62 sectors > > Oops, true! How strange. So there was no sector 63 in the CHS model and > that is why the first sector of cyl 1 (the start of the first partition) > is LBA 63... Does anyone know the historical reasons for this? Well, the point is, in CHS addressing sector numbering starts with 1, not 0= ,=20 and since there are only 6 bits available for the sector number (the other = 2=20 being used for cylinder number bits #8 and #9), the maximum number of secto= rs=20 per track in CHS in 63. Regards, Niels