On Sun, 29 Sep 2019 at 21:22, Samuel Sieb <sam...@sieb.net> wrote:

> On 9/29/19 12:33 PM, Frédéric wrote:
> > I put the disk in a USB3.1 box. It says:
> > smartctl 7.0 2019-03-31 r4903 [x86_64-linux-5.2.13-200.fc30.x86_64]
> > (local build)
> > Copyright (C) 2002-18, Bruce Allen, Christian Franke,
> www.smartmontools.org
> > /dev/sda: USB to NVMe bridge [please try '-d sntjmicron' and report
> > result to: smartmontools-supp...@listi.jpberlin.de]
> > Please specify device type with the -d option.
> > Use smartctl -h to get a usage summary
> >
> > The other new one gives much more information. I should probably try
> > when plugged directly to the mother card.
>
> smartctl doesn't usually work well when the drive is attached using USB.
>

"Usually doesn't work" is a bit strong.   With current hardware I'd say it
usually does work with USB.   See: https://www.smartmontools.org/wiki/USB
for details.   The big problem is that low-end vendors don't tell you what
chipset they use, and sometimes the same model USB case is sold with
a variety of chipsets, so you can't count on smartmon support even if it
works with the last case you bought.

-- 
George N. White III
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