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Date:      Tue, 26 Nov 2002 17:46:24 -0800 (PST)
From:      Nate Lawson <nate@root.org>
To:        "Ronald F. Guilmette" <rfg@monkeys.com>
Cc:        freebsd-scsi@freebsd.org
Subject:   Re: Upgrade from Adaptec 2940UW to 29160N - Problem solved! 
Message-ID:  <Pine.BSF.4.21.0211261743090.87503-100000@root.org>
In-Reply-To: <90002.1038361150@monkeys.com>

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On Tue, 26 Nov 2002, Ronald F. Guilmette wrote:
> In message <Pine.BSF.4.21.0211261719290.87386-100000@root.org>, you wrote:
> >Ok, well the current values would be helpful.  Any information would help
> >fix the problem for others.
> 
> The _current_ geometry for the drive in question is shown in the fdisk
> output below.  However I really don't believe that this info will be
> of any use to anybody.  (And anyway, it is definitely _not_ the same
> as the geometry that was in place before I repartitioned my drive to
> help solve my 2940UW -> 29160N upgrade problem.)

Both of those adapters are ahc(4).  Since the driver does the CHS
calculation for a given device, the geometry should have been the same
when writing the partition info.  However, there may have been a
difference in the BIOS computation of geometry, hence the booting
problem.  It would have been nice to have that matrix (old/new BSD
geometry vs. old/new HBA BIOS geometry).
 
-Nate


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