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Date:      Tue, 27 Feb 2007 15:33:25 +1100
From:      Peter Jeremy <peterjeremy@optushome.com.au>
To:        Joe Auty <joe@netmusician.org>
Cc:        freebsd-hackers@freebsd.org, freebsd-questions@freebsd.org
Subject:   Re: kernel panic at boot on any 6.x OS
Message-ID:  <20070227043324.GX844@turion.vk2pj.dyndns.org>
In-Reply-To: <73B261EE-79C5-4773-B563-9D9FCA16B4C8@netmusician.org>
References:  <39E24107-964D-414C-95D1-5B1C376291E4@netmusician.org> <001001c759a6$438d5ed0$3c01a8c0@coolf89ea26645> <73B261EE-79C5-4773-B563-9D9FCA16B4C8@netmusician.org>

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On 2007-Feb-26 17:38:10 -0500, Joe Auty <joe@netmusician.org> wrote:
>My system does boot off of disc 1 of the FreeBSD 6.2 CD.

That's a good start.  Together with your memtest results, it
suggests that your hardware is OK.

> However, =20
>even when copying the /boot directory from the CD to my machine, it =20
>still produces the same kernel panic, even when starting in safe =20
>mode.

Can you confirm that you have either deleted or renamed /boot before
replacing it with files from the CD.  An out-of-sync module does sound
the most likely problem.  If that doesn't help, please start DDB and
get a backtrace.

> I've run a memtest, and it checked out fine.

Note that memtest cannot prove that your system doesn't have a
problem.  There are far too many states that your system could
potentially be in.  DRAM is especially susceptable to pattern-
dependent and temporal glitches.

>There must be something in my user space or world that it barfs on. I =20
>guess I will try a clean install and rebuild at some point...

If you're not sure where this is being triggered, you could try
adding 'rc_debug=3D"YES"' to your rc.conf (or even a 'set -x' if
you are getting really desperate).  This will make the boot sequence
far more verbose.

--=20
Peter Jeremy

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