How to stop attached USB device / send IRP_MN_REMOVE_DEVICE?

Dag-Erling Smørgrav des at
Tue Aug 14 14:56:33 PDT 2007

Sven Hazejager <sven-freebsd at> writes:
> 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.

All modern disks (since at least the early 1990s) automatically park
their heads when they lose power.  There is no need to do it in

Dag-Erling Smørgrav - des at

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