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Sender: Alexander Motin <mavbsd@gmail.com>
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Date: Tue, 12 Apr 2011 09:17:51 +0300
From: Alexander Motin <mav@FreeBSD.org>
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To: David Naylor <naylor.b.david@gmail.com>
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Cc: FreeBSD-Current <freebsd-current@freebsd.org>
Subject: Re: [regression] unable to boot: no GEOM devices found.
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David Naylor wrote:
> I am running -current and since a few days ago (at least 2011/04/11) I am 
> unable to boot.  
> 
> The boot process stops when it looks to find a bootable device.  The prompt 
> (when pressing '?') does not display any device and yielding one second (or 
> more) to the kernel (by pressing '.') does not improve the situation.  
> 
> A known working date is 2011/02/20.  
> 
> I am running amd64 on a nVidia MCP51 chipset.  

MCP51... again...

> I am willing to help any way I can.  

You could start from capturing and showing verbose dmesg. Full or at
least in parts related to disks.

-- 
Alexander Motin