Update 2T test to not generate an MBR
Update 2T test to not generate an MBR

It turns out that an offset > 2^32 wasn't supported in the MBR. However
it's still good to know that the other functions can write to large
addresses.

fhunleth/fwup,michaelkschmidt/fwup,fhunleth/fwup,fhunleth/fwup,michaelkschmidt/fwup,michaelkschmidt/fwup