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Date: Fri, 07 Oct 2011 15:41:00 -0400
From: Glen Barber <gjb@FreeBSD.org>
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To: Poul-Henning Kamp <phk@phk.freebsd.dk>
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Cc: Garrett Cooper <yanegomi@gmail.com>, Warren Block <wblock@wonkity.com>,
	freebsd-current@freebsd.org, Benjamin Kaduk <kaduk@mit.edu>,
	Arnaud Lacombe <lacombar@gmail.com>
Subject: Re: aliasing (or renaming) kern.geom.debugflags
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Hi,

On 10/7/11 3:18 PM, Poul-Henning Kamp wrote:
>> My guess is that GEOM isn't letting go of the GPT table and you have
>> multiple partitions in the GPT table and you're not destroying them
>> hierarchically in a proper manner.. but again, that's just a guess
>> based on hazy recollection.
> 
> If none of the GPT partitions are open, you should be able to
> open /dev/da0.  If not, the GPT geom class is buggy.
> 

In my experience, without kern.geom.debugflags=16, the MBR will not be
written to the memstick, leaving you with what would effectively be a
coaster in the not-so-distant past.

-- 
Glen Barber | gjb@FreeBSD.org
FreeBSD Documentation Project