Worse than that. There are drives that did implement it - as a no-op.
They didn't even say "Umm sorry no can do"
> See above. Disable Write Cache would also do with recent drives.
Except some drives have a habit of turning it back on quietly
> If I recall correctly, Windows' shutdown procedure was at some time in
> the past changed to wait a couple of seconds before switching the ATX
> computers off, to allow the drives to flush their caches. I can't quote
> on a KB article though.
Flush on shutdown was apparently one of the windows 98 service pack/hot
fix additions.
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