On Tuesday, October 2, 2018 at 11:17:28 AM UTC+2, A. Dumas wrote:
> On 02-10-18 03:44, bob prohaska wrote:
> > Is there a program that can interrogate a flash storage device to
> > determine how many spare blocks remain?
>
> Any S.M.A.R.T. diagnostic tool will tell you spare blocks remaining. The
> different parameters have fixed IDs, spare blocks remaining is ID=251
> (0xFB) or sometimes 232 (0xE8), see https://en.wikipedia.org/wiki/S.M.A.R.T.

SD cards and USB sticks usually don't have SMART protocol.

Bye Jack

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