diskutil list external
	/dev/disk2 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *3.0 TB     disk2
   1:                        EFI EFI                     209.7 MB   disk2s1
   2:       Microsoft Basic Data SANS TITRE              3.0 TB     disk2s2
	diskutil umountDisk force disk2
	Forced unmount of all volumes on disk2 was successful
	sudo gpt remove -i 2 disk2
	sudo gpt add -b 411648 -s 4882812500 -t EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 -i 2 disk2 ; diskutil list disk2
	/dev/disk2 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *3.0 TB     disk2
   1:                        EFI EFI                     209.7 MB   disk2s1
   2:       Microsoft Basic Data                         2.5 TB     disk2s2
                    (free space)                         500.3 GB   -
	diskutil mount disk2s2 ; diskutil list disk2
	Volume SANS TITRE on disk2s2 mounted
/dev/disk2 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *3.0 TB     disk2
   1:                        EFI EFI                     209.7 MB   disk2s1
   2:       Microsoft Basic Data SANS TITRE              2.5 TB     disk2s2
                    (free space)                         500.3 GB   -
	   2:       Microsoft Basic Data SANS TITRE              2.5 TB     disk2s2
	sudo gpt show disk2
	       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        2008         
      411648  4882812500      2  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
  4883224148   977242507         
  5860466655          32         Sec GPT table
  5860466687           1         Sec GPT header
	  4883224148   977242507
	diskutil umount force disk2s2
	sudo gpt add -b 4883224148 -s 977242500 -t 48465300-0000-11AA-AA11-00306543ECAC -i 3 disk2 ; diskutil list disk2
	diskutil list disk2