00000c00 50 4d 00 00 00 00 00 07 00 00 04 c0 00 61 6b 4f |PM...........akO|
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(my arrows didn't come through very well, I'll try underlines)


with regards to apple partitions

the start block of this partition is 00 00 04 c0

and the length of this partition is 00 61 6b 4f

but all you really need is the start block number to calculate the offset