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From: Chuck Swiger <cswiger@mac.com>
Date: Thu, 17 Aug 2006 10:08:37 -0700
To: Ceri Davies <ceri@submonkey.net>
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Cc: questions@FreeBSD.org
Subject: Re: Wilfully dirtying a filesystem
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On Aug 17, 2006, at 9:55 AM, Ceri Davies wrote:
> I cannot easily get to single-user on this machine, so is there a good
> way for me to dirty the filesystem just enough to force "fsck -p" to
> fail (yanking power also difficult)?  "umount -f /usr; reboot" doesn't
> seem to work...

Edit a file on /usr and leave the editor session going to make sure  
you've got an open file on that filesystem, then do a "reboot -nq"  
instead...

-- 
-Chuck