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Date: Wed, 09 Sep 2009 15:04:33 +0200
From: Dimitry Andric <dimitry@andric.com>
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To: Michael Sperber <sperber@deinprogramm.de>
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Cc: Mikael Bak <mikael@t-online.hu>, freebsd-stable@freebsd.org,
	Robert Watson <rwatson@FreeBSD.org>, Miroslav Lachman <000.fbsd@quip.cz>
Subject: Re: Upgrade FreeBSD 7.1 to 7.2
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On 2009-09-09 14:25, Michael Sperber wrote:
>> If you rely on a serial console, I
>> would recommend first switching 7.2 to using uart
...>
> Could you briefly elaborate on how that's done with 7.x?  I.e. is
> changing device.hints and /etc/ttys enough (what changes?), or do I need
> to recompile the kernel?

You also need to remove device sio from your kernel configuration and
recompile.  If you have both sio and uart in your kernel (the default on
7.x IIRC), sio will take precedence.

N.B: please exercise caution when doing this to a server in a colo 10000
km away. :)