On 2019-07-18, Adrian  wrote:
> In message , Martin Gregorie
> writes
>>... so, unless I missed seeing something about an adapter in what is now
>>quite a long thread, you must also have some sort of adapter that has
>>power output and a SATA socket on one end that connect to the SSD, and
>>either a USB socket or an ethernet plug plus power connector on the other
>>end that connect to the RPi.
>>
>>Kindly describe this device, which even might be an external USB disk
>>drive case for SATA disks.
>>
>>
>
> The SSD was in a case which acts as a SATA - USB adapter.  Power for the
> SSD is provided via the USB lead, hence trying it via a powered hub.
>
> Adrian

Are you _SURE_ the electronics in that case are fully compliant
with the respective standards?  I had some cases some years ago
that produced enormous quantities of I/O errors in dmesg while
doing full-speed sequential reads and/or writes.  I suspect some
of those cases are not fully tested on large sequential
transfers, and perhaps Linux can send I/O requests faster (with
less gap between) than that other OS.

HTH

--
Robert Riches
spamtrap42@jacob21819.net
(Yes, that is one of my email addresses.)

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