BTW, could you try manually aligning the GPT partition?
See below how to do this in parted:
# parted /dev/sdX
# Set units to sectors (in this case 512B):
(parted) unit s
(parted) rm
Partition number? 1
(parted) print
Model: ATA WDC WD15EARS-00Z (scsi)
Disk /dev/sdb: 2930277168s
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Number Start End Size File system Name Flags
(parted) mkpart
Partition name? []?
File system type? [ext2]?
Start? 64
End? -1
Warning: You requested a partition from 64s to 2930277167s.
The closest location we can manage is 64s to 2930277134s.
Is this still acceptable to you?
Yes/No? Yes
(parted) print
Model: ATA WDC WD15EARS-00Z (scsi)
Disk /dev/sdb: 2930277168s
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Number Start End Size File system Name Flags
1 64s 2930277134s 2930277071s
(parted) quit
Information: You may need to update /etc/fstab.
This should align the partition’s start from the 32nd kilobyte (or should I say kibibyte?)
