> On 2 Feb 2024, at 17:58, Florian Weimer <[email protected]> wrote:
> 
> The second one is a standard SATA drive in an USB enclosure, and those
> have write-reordering caches, as far as I understand it.

We need a kernel storage expert to tell us the definitive truth on this stuff.
I may be out of date on this stuff.

What I understand is that the drive will be told via the appropriate SCSI(?) 
command
that it must not reorder the writes. Failure to implement that command means the
drive will not have WHQL from Microsoft. Without WHQL its very hard to sell a 
drive
in the market place.

Barry

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