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Date: Thu, 19 Jul 2007 08:58:43 -0600 (MDT)
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To: freebsd@meijome.net
From: "M. Warner Losh" <imp@bsdimp.com>
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Cc: LoN_Kamikaze@gmx.de, olli@lurza.secnetix.de, freebsd-stable@freebsd.org,
	idiotbg@gmail.com, josh@tcbug.org
Subject: Re: removing external usb hdd without unmounting causes reboot?
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In message: <20070719130252.6880b967@localhost>
            Norberto Meijome <freebsd@meijome.net> writes:
: re. USB disks, could we not by default use amd to mount USB devices? It seems
: the obvious native replacement for hald + polkitd + dbus I use in XFCE with
: Thunar on my laptop...

Won't work.  Once the device driver is already gone and devd/dbus gets
the notification, it is already too late.  umount -f will cause I/O to
a device that no longer exists, causing the panic.

Warner