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Date: Sat, 4 Oct 2008 21:18:06 -0400
From: Jerry McAllister <jerrymc@msu.edu>
To: "Don O'Neil" <lists@lizardhill.com>
Message-ID: <20081005011805.GA63673@gizmo.acns.msu.edu>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Can't add new 1TB disk in FreeBSD 6.1
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On Sat, Oct 04, 2008 at 04:43:14AM -0700, Don O'Neil wrote:

> I just swapped out an old 500G disk with a 1TB one and I'm trying to label
> it and mount it...
> 
> If I run bsdlabel -w ad4, I get:
> 
> bsdlabel: Geom not found
> 
> If I run sysinstall, it tells me that it can't write to the disk.
> 
> I've tried an old 'bypass': sysctl kern.geom.debugflags=16, but that didn't
> help.
> 
> Can anyone help me get this new disk installed without having to boot off a
> recovery CD? The server is 500 miles away from me and I don't have direct
> console access.


did you try doing a dd to the disk?   Sometimes a new unwritten disk
seems to need it.  I don't know why.   It is mentioned in the man
page for bsdlabel  - near the bottom in an example.

  dd f=/dev/zero of=/dev/ad4 bs=512 count=1000

or something like that.

I have run in to this a couple of times in the past where the dd
seemed to fix it.

Anyway, it is getting near Halloween, so these mystery fixes may
be appropriate...

////jerry


> 
> Thanks!!!
> 
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