SD Library not working with FAT16

[agdl]

From @matthijskooijman on November 14, 2014 10:49

Initializing the volume and running the CardInfo example works fine, but reading files does not work. Instead of the actual file contents, I get some random garble (mostly spaces) of the correct length. I tried this using the DumpFile example.

I suspect that the block lookup for FAT16 might be wrong. Looking at this piece of code, I can't imagine that being correct.

Copied from original issue: arduino/Arduino#2443