How to stop attached USB device / send IRP_MN_REMOVE_DEVICE?
des at des.no
Wed Aug 15 02:18:04 PDT 2007
Simon 'corecode' Schubert <corecode at fs.ei.tum.de> writes:
> Dag-Erling Smørgrav <des at des.no> writes:
> > 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
> > software.
> So it seems that windows is switching off the power of the devices
> when you select "eject". I can see that some users might feel more
> comfortable with this behaviour.
Yes, if only because it saves power and reduces noise (for USB-attached
mechanical drives at least). Note that this also requires logic in the
enclosure to cut power to the drive when the device is detached; not all
enclosures do this. Brand name drives (Maxtor OneTouch, Western Digital
Passport etc.) usually do, while cheap DIY enclosures usually don't.
Dag-Erling Smørgrav - des at des.no
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