FLR does not work on GPT structured disks. This solution gives links on how to convert to MBR so FLR can be performed.
At this time vRanger FLR is only capable of reading data structured on MBR disk layout.
Please be aware that MBR will only support disks below 2TB in size.
The following links guide you on to convert from GPT to MBR:
Windows 7/2008: http://technet.microsoft.com/en-us/library/cc725797.aspx
Windows XP: http://support.microsoft.com/kb/282793