Re: How to stop attached USB device / send IRP_MN_REMOVE_DEVICE?

看板FB_hackers作者時間18年前 (2007/08/15 17:18), 編輯推噓0(000)
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Simon 'corecode' Schubert <corecode@fs.ei.tum.de> writes: > Dag-Erling Sm=C3=B8rgrav <des@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. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"
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