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Date: Fri, 1 Oct 2010 02:01:43 -0700
From: Jeremy Chadwick <freebsd@jdc.parodius.com>
To: Daniel Braniss <danny@cs.huji.ac.il>
Message-ID: <20101001090143.GA40450@icarus.home.lan>
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Cc: freebsd-stable@freebsd.org
Subject: Re: boot0cfg problems
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On Fri, Oct 01, 2010 at 09:26:41AM +0200, Daniel Braniss wrote:
> In a not so distant past, boot0cfg -sn ... used to work, then it only
> partialy worked, it would modify the data in boot but not the mbr, for
> which 'gpart -s set active -in ...' modified the mbr. Now
> # boot0cfg -s1 -v /dev/mfid0
> boot0cfg: write_mbr: /dev/mfid0: Operation not permitted
> but:
> # boot0cfg -v /dev/mfid0
> #   flag     start chs   type       end chs       offset         size
> 1   0x80      0:  1: 1   0xa5   1023:212:63           63     41943006
> 2   0x00   1023:255:63   0xa5   1023:169:63     41943069     41943006
> 3   0x00   1023:255:63   0xa5   1023:126:63     83886075     41943006
> 4   0x00   1023:255:63   0xa5   1023:201:63    125829081   1046478825
> 
> version=2.0  drive=0x80  mask=0x3  ticks=182  bell=# (0x23)
> options=packet,update,nosetdrv
> volume serial ID 9090-9090
> default_selection=F2 (Slice 2)

Can you try doing "sysctl kern.geom.debugflags=16" first?

-- 
| Jeremy Chadwick                                   jdc@parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |