sudo gdisk /dev/sdb
[sudo] password for barmaley:
GPT fdisk (gdisk) version 0.8.8

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.

Warning! Secondary partition table overlaps the last partition by
1202 blocks!
You will need to delete this partition or resize it in another utility.

Command (? for help):