partition table robert external

$ sudo /sbin/parted /dev/sdb

GNU Parted 3.2
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) h
  align-check TYPE N                        check partition N for TYPE(min|opt) alignment
  help [COMMAND]                           print general help, or help on COMMAND
  mklabel,mktable LABEL-TYPE               create a new disklabel (partition table)
  mkpart PART-TYPE [FS-TYPE] START END     make a partition
  name NUMBER NAME                         name partition NUMBER as NAME
  print [devices|free|list,all|NUMBER]     display the partition table, available devices, free space, all found partitions, or a particular partition
  quit                                     exit program
  rescue START END                         rescue a lost partition near START and END
  resizepart NUMBER END                    resize partition NUMBER
  rm NUMBER                                delete partition NUMBER
  select DEVICE                            choose the device to edit
  disk_set FLAG STATE                      change the FLAG on selected device
  disk_toggle [FLAG]                       toggle the state of FLAG on selected device
  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER
  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition NUMBER
  unit UNIT                                set the default unit to UNIT
  version                                  display the version number and copyright information of GNU Parted
(parted) u
Unit?  [compact]? b
(parted) print
Model: WD Elements 1048 (scsi)
Disk /dev/sdb: 2000396746752B
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start           End             Size            File system  Name                  Flags
 1      20480B          209735679B      209715200B      fat32        EFI System Partition  boot, esp
 2      209735680B      2000262508543B  2000052772864B               WD_Elements
 3      2000262508544B  2000396726271B  134217728B      hfs+         Booter