From owner-freebsd-bugs  Sun Jun  4 18:49:02 1995
Return-Path: bugs-owner
Received: (from majordom@localhost)
          by freefall.cdrom.com (8.6.10/8.6.6) id SAA00357
          for bugs-outgoing; Sun, 4 Jun 1995 18:49:02 -0700
Received: from ref.tfs.com (ref.tfs.com [140.145.254.251])
          by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id SAA00351
          for <bugs@freebsd.org>; Sun, 4 Jun 1995 18:49:01 -0700
Received: (from phk@localhost) by ref.tfs.com (8.6.8/8.6.6) id SAA18829; Sun, 4 Jun 1995 18:48:57 -0700
From: Poul-Henning Kamp <phk@ref.tfs.com>
Message-Id: <199506050148.SAA18829@ref.tfs.com>
Subject: Re: Extra HDD space ???
To: gmoravszky@tinet.ch
Date: Sun, 4 Jun 1995 18:48:56 -0700 (PDT)
Cc: bugs@FreeBSD.org
In-Reply-To: <9506042219.AA27881@cioccolato.tinet.ch> from "Gy. Moravszky" at Jun 5, 95 00:05:57 am
Content-Type: text
Content-Length: 837       
Sender: bugs-owner@FreeBSD.org
Precedence: bulk

> BIOS geometry:  255cyls/255heads/63sectors
> 
> Offset   Size      End        Name  Ptype Desc   Subtype
> 0        63        62         -       6   unused    0
> 63       16002     16064      sd0s3   1   unknown   10
> 16065    2056320   2072384    sd0s2   2   fat       6
> 2072385  1012095   3084479    sd0s1   4   extended  5
> 3084480  1012095   4096574    ds0s4   1   unknown   22
> 4096575  12025     4108599    -       6   unused    0

Those 12025 correspond to the last partial cylinder.

	4180600 % (255*63) = 12025

It's simply because the virtual geometry of the disk does not evenly
divide into the disks size, and something gets left over.

-- 
Poul-Henning Kamp <phk@login.dknet.dk> -- TRW Financial Systems, Inc.
'All relevant people are pertinent' && 'All rude people are impertinent'
=> 'no rude people are relevant'