How to stop attached USB device / send IRP_MN_REMOVE_DEVICE?

[Oliver Fromme]

Sven Hazejager wrote:
 > No, camcontrol does not support this over USB. Windows XP demonstrates it 
 > is technically possible, and I do not believe it is fully safe to 
 > disconnect the drive (even when unmounted), as the drive then is not able 
 > to park its heads, which it DOES do under XP.

Every hard disk parks its head when power is switched off.
Last time I saw a hard disk which required a command to
park its heads was about 20 years ago on a DOS machine.

Best regards
   Oliver

-- 
Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M.
Handelsregister: Registergericht Muenchen, HRA 74606,  Geschäftsfuehrung:
secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün-
chen, HRB 125758,  Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart

FreeBSD-Dienstleistungen, -Produkte und mehr:  http://www.secnetix.de/bsd

"With sufficient thrust, pigs fly just fine.  However, this
is not necessarily a good idea.  It is hard to be sure where
they are going to land, and it could be dangerous sitting
under them as they fly overhead." -- RFC 1925