cloned sd card is not booting

[Wolfgang S. Rupprecht]

Robert Moskowitz <rgm at htt-consult.com> writes:
> I suspect that although they are marketed as 16GB, they vary due to
> manufacturing quality by a block or so.

The other thing to consider if it is a bargain bin drive is that the
drive might be a counterfeit with mismarked capacity.
http://www.ebay.com/gds/All-About-Fake-Flash-Drives-2013-/10000000177553258/g.html

-wolfgang