R.Wieser wrote:

> I'm intending to do a raw backup (alike DD do if I'm not mistaken) of the SD
> card on a Windows machine and than zipping it.  For that reason I would like
> to clear all unused sectors before making the copy, as than the zipping will
> result in the smallest possible file.
>
> Q: Does Stretch have a program available which can do that, and if so which
> is it ?



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