"Justin T. Gibbs" wrote:

> >> Further, the serial number is almost never associated with the
> >> actual media, but with the physical device.  This means that the
> >> serial number you get back is usually worthless for removable
> >> media devices.  You really need to tag the media if you want to make
> >> this work.
> >
> >Absolutely, but there are a number of non-removable USB disk available.
> >As for removable ones I'm sure you could come up with some "fingerprint"
> >from the superblock.
>
> "fingerprinting" works for fixed media devices too, so why not just rely
> on it instead of adding two different identification schemes?

That's a thought.  And it would also work for device that do not have a serial
number (like non-USB, or USB that doesn't follow the mass spec.).

--

        -- Lennart