start     size  index  contents
        0        1         PMBR
        1        1         Pri GPT header
        2       32         Pri GPT table
       34        6         
       40   409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
   409640  7389104      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC
  7798744   262150         
  8060894       32         Sec GPT table
  8060926        1         Sec GPT header