$ diskutil list /dev/disk0
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *512.1 GB   disk0
   1:         Microsoft Reserved                         134.2 MB   disk0s1
   2:                        EFI EFI                     209.7 MB   disk0s2
   3:                  Apple_HFS system                  319.2 GB   disk0s3
   4:                 Apple_Boot Recovery HD             650.1 MB   disk0s4

$ 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      262144      1  GPT part - [GUID REDACTED]
      262178        2014
      264192      409600      2  GPT part - [GUID REDACTED]
      673792   623464448      3  GPT part - [GUID REDACTED]
   624138240     1269760      4  GPT part - [GUID REDACTED]
   625408000   374807183
  1000215183          32         Sec GPT table
  1000215215           1         Sec GPT header

$ sudo fdisk /dev/disk0
Disk: /dev/disk0        geometry: 62260/255/63 [1000215216 sectors]
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: EE 1023 254  63 - 1023 254  63 [         1 - 1000215215] <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