$ diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *1.0 TB     disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                  Apple_HFS Untitled                999.3 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3


$ sudo gpt -r show /dev/disk0
Password:
       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  1951845952      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC
  1952255592     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  1953525128           7
  1953525135          32         Sec GPT table
  1953525167           1         Sec GPT header


$sudo fdisk /dev/disk0
Disk: /dev/disk0	geometry: 121601/255/63 [1953525168 sectors]
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: EE 1023 254  63 - 1023 254  63 [         1 - 1953525167] <Unknown ID>
 2: 00    0   0   0 -    0   0   0 [         0 -          0] unused
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused