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Date: Mon, 13 Aug 2012 14:07:05 -0600
To: Michael Sierchio <kudzu@tenebras.com>
From: Brett Glass <brett@lariat.net>
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Cc: questions@freebsd.org, Polytropon <freebsd@edvax.de>
Subject: Re: How to keep freebsd-update from trashing custom kernel?
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At 11:33 AM 8/13/2012, Michael Sierchio wrote:

>And it does, in my experience.  If the hash of the kernel doesn't
>match that of the distribution (or recent update), freebsd-update
>leaves it alone.

That is what I thought it would do, based on the docs. However, 
when I recently ran freebsd-update on a FreeBSD 9.0 machine with a 
module-less custom kernel at /boot/kernel/kernel, it fetched a 
GENERIC kernel and overwrote the custom kernel with it. 
Interestingly, it didn't bring in any modules; it just overwrote the one file.

--Brett Glass