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Date: Tue, 14 Aug 2007 11:28:19 +0200 (CEST)
From: Sven Hazejager <sven-freebsd@hazejager.nl>
To: freebsd-hackers@freebsd.org
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Subject: How to stop attached USB device / send IRP_MN_REMOVE_DEVICE?
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Hi all,

Is there a tool under FreeBSD 6.2 that properly stops a USB device, 
equivalent to Windows XPs Safely Remove Hardware? I noticed that Windows 
sends a IRP_MN_REMOVE_DEVICE command, after which my LaCie external HDD 
spins down. Same applies to any USB stick: the light goes out on the 
stick. I would like to do this under FreeBSD too. camcontrol eject or stop 
don't do anything.

So, the question really is: how to send a IRP_MN_REMOVE_DEVICE command?

Thanks,

Sven