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Date:      Fri, 26 May 2000 20:06:10 -0300 (EST)
From:      Paje da Oca <root@maloca.oca.org.br>
To:        questions@freebsd.org
Cc:        sos@freebsd.dk
Subject:   RE: wrong disk geometry reported
Message-ID:  <Pine.BSF.4.21.0005261947000.24963-100000@maloca.oca.org.br>
In-Reply-To: <200005262024.NAA00882@mass.cdrom.com>

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On Fri, 26 May 2000, Mike Smith wrote:
> I'm running 4.0-RELEASE and have tried BIOS set up as auto-detect, large,
> normal, and LBA.  None of them work.  I've been using FreeBSD for almost 5
> years on almost a hundred different servers and have never had anything like
> this.  I'm using the /dev/ad1, /dev/rad1 devices.  I have used both the
> command line fdisk, fdisk -i, and sysinstall.  I have tried it at initial
> installation.  I tried installing without configuring that drive so I could
> do it manually and no such luck.  In my experience with FreeBSD it doesn't
> matter what BIOS thinks.  The kernel manages to pull the correct info from
> the disk at boot.  Here at freerealtime.com, our developers do most of their
> work on Linux (ack!).  I haven't allowed one Linux machine into our
> production systems and I'm trying to move our developers onto FreeBSD.  So
> far so good.  With this one system I can boot the Linux kernel and Linux
> will see the drive perfectly.  It makes me feel stupid when I just got done
> explaining how much better FreeBSD is and how I've never had a problem with
> compatability or reliability. I'm sure that if I purchased the hardware, it
> would work.  But an IDE disk is an IDE disk.

   Although I havent installed that many machines, I like FreeBSD,
   and many of our servers run it.

   Trying to install 4.0-RELEASE I had similar problems to the one
   reported here.

   The installation floppies were not able to label the disk, and
   even while I partitioned it with the 3.4 floppies and went back
   to 4.0 installation, the disk was not accessible.

   The problem seems to be with the driver, ad. I would like to
   know how to make new installation floppies for 4.0, substitu-
   ting the old drive, wd, by this one (the solution needs to be
   implemented without resorce to 4.0).

   ANY HELP?

The messages I can read on the message console (SHIFT+ALT+F2),
are:

ad0:   cannot find label (no disk label)
ad0s1: cannot find label (no disk label)
ad0s2: slice extends beyond end of disk: truncating from
       16711680 to 25011856

My BIOS is: Award Modular Bios V4.50PG, 4.076804, 2A5L9F09
I have just an IDE disk, on a Pentium-S 75MHz with 32M and
an Atapi CD-ROM

   Thanks in advance for any help,
   Leonardo



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