Hi Glenn, > It should be realized though that fixing this is not necessarily a simple > thing, nor are architectural considerations missing. I most probably understated the difficulty of implementing a safe ieee1394 DMA driver earlier. However, it's one of those things where the drivers ought to at least default to a safe configuration and allow those who like operating in the "wild west" for the purposes of speed to do so. > As for what can be done by Windows (as opposed to "any OS"), that is perhaps > limited by the great range of underlying hardware. A compromise which might allow > DMA to/from disks, tapes, or CDs but disallow it for most other peripherals > might turn out to be the best general solution available, or something > comparably ugly. In the specific case of FireWire, Windows already does this, but that is exactly how the restrictions were bypassed. You can't trust a disk device any more than any other device, since a laptop can simply emulate a storage device. cheers, tim
