From owner-freebsd-questions  Fri Mar 29 13:48:14 2002
Delivered-To: freebsd-questions@freebsd.org
Received: from wonka.esatclear.ie (wonka.esatclear.ie [194.145.128.5])
	by hub.freebsd.org (Postfix) with ESMTP id 1EF0C37B41A
	for <freebsd-questions@freebsd.org>; Fri, 29 Mar 2002 13:48:10 -0800 (PST)
Received: from wintermute (l-airlock088.esatclear.ie [194.165.165.88])
	by wonka.esatclear.ie (8.9.3/8.9.3) with ESMTP id VAA10939
	for <freebsd-questions@freebsd.org>; Fri, 29 Mar 2002 21:48:02 GMT
Received: by wintermute (Postfix, from userid 1001)
	id D8CDB36DBD6; Fri, 29 Mar 2002 21:11:50 +0000 (GMT)
Date: Tue, 25 Dec 2001 16:11:39 +0000
From: Tiarnan O Corrain <ocorrain@esatclear.ie>
To: freebsd-questions@freebsd.org
Subject: Linux -> BSD drive addresses
Message-ID: <20011225161139.A562@wintermute>
Mail-Followup-To: Tiarnan O Corrain <ocorrain@esatclear.ie>,
	freebsd-questions@freebsd.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.3.22.1i
Lines: 48
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-questions.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-questions>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-questions>
X-Loop: FreeBSD.ORG

Hi all--

I recently switched from Linux to FreeBSD, and am
puzzled by FreeBSD's drive addressing scheme. Basically I have a Linux
partition on my second drive that contains all of my mp3s. It is the
second partition on the disk. Here's what fdisk reports:

  wintermute# fdisk /dev/ad0
  ******* Working on device /dev/ad0 *******
  parameters extracted from in-core disklabel are:
  cylinders=2658 heads=240 sectors/track=63 (15120 blks/cyl)
  
  Figures below won't work with BIOS for partitions not in cyl 1
  parameters to be used for BIOS calculations are:
  cylinders=2658 heads=240 sectors/track=63 (15120 blks/cyl)
  
  Media sector size is 512
  Warning: BIOS sector numbering starts with sector 1
  Information from DOS bootblock is:
  The data for partition 1 is:
  sysid 12,(DOS or Windows 95 with 32 bit FAT, LBA)
      start 257040, size 20487600 (10003 Meg), flag 0
  	  beg: cyl 17/ head 0/ sector 1;
  	  end: cyl 1023/ head 239/ sector 63
  The data for partition 2 is:
  sysid 131,(Linux filesystem)
      start 20744640, size 19444320 (9494 Meg), flag 0
  	  beg: cyl 1023/ head 255/ sector 63;
  	  end: cyl 1023/ head 239/ sector 63
  The data for partition 3 is:
  <UNUSED>
  The data for partition 4 is:
  <UNUSED>

I can't seem to convert this information into a usable device name for
FreeBSD. For example:

  wintermute# mount_ext2fs /dev/ad0s1 /mnt
  mount_ext2fs: vfsload(ext2fs): No such file or directory

  wintermute# mount_ext2fs /dev/ad0s2 /mnt
  mount_ext2fs: vfsload(ext2fs): No such file or directory

Can anyone help me?

Thanks

Tiarnan


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message