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Date:      Fri, 15 Jun 2001 08:42:36 -0400
From:      Bill Moran <wmoran@iowna.com>
To:        jmora@ahvm.hvm.sas.cica.es
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Problems with my hard disk geometry?
Message-ID:  <3B2A02BC.106D0228@iowna.com>
References:  <Pine.BSF.4.10.10106151013150.2323-100000@groucho.hvm.sas.cica.es>

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What does your BIOS say the geometry is?

"Jesus A. Mora" wrote:
> 
> Hi!
> 
> Some days ago, I got my new PC. First, I setup Win98se and then FreeBSD 4.2
> on the second slice.
> Shortly after, Windows began to strange things and it even crashed just on
> booting.
> I got fed up and decided to reinstall Win98 (original version, this time). Of
> course, it zapped the BootManager, so I ran BOOTINST, but FreeBSD proved to
> be unable to boot. I read anywhere that this could be because of some problem
> related with the HD geometry and the solution was to reinstall FreeBSD
> 
> I have a question: those crashes of Win98 could be caused for some strange
> incompatibilities or corruption in the info on the Partition Table derived
> from the installation of FreeBSD?
> It's not a joke: I need BOTH systems on my PC. I know that Windows is not a
> model of stability and reliability, but I would like to be sure that a new
> installation of FreeBSD won't cripple Windows, behaving "a la Microsoft".
> 
> These are the data:
> 
> >> Hard Disk: Seagate ST-320413A
>         Size: 20021MB
>         Cyl: 38792      Hd: 16  Sectors: 63
> 
> >> Fdisk MS-DOS: (very terse, of course)
>         Total Space: 19093MB
>         Part.:  DOS: 13978 MB
>                 Non-DOS: 5114 MB
> 
> >> Win98 sees a HD geometry of 2434 cyl, 255 heads  and 63 sectors (LBA mode).
> 
> >> MBR-Partition Table: (after reinstalling Win98)
>         Part.#                  1                       2
>         Active                  80                      00
> 
>         Start:  H               1                       255
>                 S               1                       11111111
>                 C               0                       11111111
> 
>         Op.Sys                  0c (FAT)                a5 (FreeBSD)
> 
>         End:    H               254                     254
>                 S               11111111                11111111
>                 C               11111111                11111111
> 
>         Sectors Preceding:      63                      28627830
>         Length:                 28627767                10474380
> 
> >> FreeBSD's FDISK: (after reinstalling Win98, and FreeBSD unable to boot)
>         Disk name: ad0
>         Geometry: Cyl: 2434   Heads: 255   Sectors: 63
>                 --> 39102210 sectors (19092MB)
> 
>    Offset       Size (ST)       End
>    0            63              62              -               (unused)
>    63           28627767        28627829        ad0s1           FAT       =
>    28627830     10474380        39102209        ad0s2           FreeBSD   C=
>    39102210     126             39102335        -               (unused)
> 
> Well, I hope some kind fellow will enlighten my mind.
> TIA
> 
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