(parted)                                                                  
(parted) print                                                            
Error: The backup GPT table is corrupt, but the primary appears OK, so that will be used.
OK/Cancel? c                                                              
Model: ATA WDC WD2500AAKS-0 (scsi)
Disk /dev/sda: 250GB
Sector size (logical/physical): 512B/512B
Partition Table: unknown
Disk Flags: 
(parted)                                                                  
(parted)                                                                  
(parted) print                                                            
Error: The backup GPT table is corrupt, but the primary appears OK, so that will be used.
OK/Cancel? ok
Model: ATA WDC WD2500AAKS-0 (scsi)
Disk /dev/sda: 250GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system     Name                  Flags
 1      1049kB  2097kB  1049kB                                        bios_grub
 2      2097kB  540MB   538MB   fat32           EFI System Partition  boot, esp
 3      540MB   2688MB  2147MB  linux-swap(v1)                        swap
 4      2688MB  4835MB  2147MB  zfs
 5      4835MB  250GB   245GB   zfs

(parted)