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Date: Tue, 30 Mar 2010 16:50:30 +0100
From: "N.J. Mann" <njm@njm.me.uk>
To: "Andrey V. Elsukov" <bu7cher@yandex.ru>
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	Daniel Braniss <danny@cs.huji.ac.il>, freebsd-stable@freebsd.org
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X-Operating-System: FreeBSD 7.3-STABLE
User-Agent: mutt-NJM (2009-12-30)
Cc: freebsd-stable@freebsd.org
Subject: Re: Re: boot and boot0cfg problem
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In message <73161269963850@web103.yandex.ru>,
	Andrey V. Elsukov (bu7cher@yandex.ru) wrote:
> 30.03.10, 14:03, "Daniel Braniss" <danny@cs.huji.ac.il>:
> 
> > > On 30.03.2010 12:05, Daniel Braniss wrote:
> >  > > so it seems that someone is preventing changes to the partition table!
> >  > > btw, this problem was not present in older boot0 (1.0) where the active
> >  > > partition flag is ignored.
> >  > 
> >  > You can change active partition via gpart(8).
> >  > 
> >  Hi Andrey,
> >  I'm sorry, I've reread the manual, and can't find the write magic.
> 
> Yes, i also doesn't remember where it can be read. Only in g_part_mbr.c :)
> Try this:
> # gpart set -a active -i 1 ada2
> This will set active first partition on ada2:
> # gpart show ada2
> =>        63  1250263665  ada2  MBR  (596G)
>           63    40965687     1  !7  [active]  (20G)
>     40965750  1209292875     2  !7  (577G)
>   1250258625        5103        - free -  (2.5M)
> 
> >  btw, boot0cfg does call geom but something seems to be broken.
> I'll look boot0cfg code today and probably made a patch.

Do you need to disable the geom anti-foot-shooting feature?  I seem to
remember it is something like:

sysctl kern.geom.debugflags=16


Cheers,
       Nick.
--