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Date: Tue, 15 Sep 2009 00:06:51 +0200
From: Thierry Thomas <thierry@FreeBSD.org>
To: Jin Guojun <jguojun@sbcglobal.net>
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Subject: Re: 8.0-Beta installation problem -- Unable to find /dev/ad0s1b
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Le Lun 14 sep 09 à 23:08:53 +0200, Jin Guojun <jguojun@sbcglobal.net>
 écrivait :
> I do not enve know how to make "dangerously dedicated" disk, and the
> 8.0 may do this sliently.

No, I don't think so! But such a problem may arise if your disk had been
installed as "dangerously dedicated" in a former version. Unfortunately,
previous versions of sysinstall have created uncorrect labels, and the
new gpart in 8.0 does not see them.

In that case, you have to boot kernel.old and wipe out the bad label. If
you reboot with a 7.2 kernel, can you see your missing partitions?
-- 
Th. Thomas.