AIUI, Hitachi has a GPT driver for Windows XP. This would allow you to set up a Hitachi drive with a GPT partition on a Windows XP box. WD has acquired Hitachi’s HDD business, so perhaps Hitachi’s software may work for WD’s drives???
Hitachi GPT Disk Manager (supplied in Retail Kit):
http://www.hgst.com/internal-drives/above-2tb/
http://www.paragon-software.com/hitachi/ (36MB download)
Otherwise there is Paragon GPT Loader (US$20):
http://www.paragon-software.com/technologies/components/gpt-loader/
“Paragon GPT Loader supports internally connected single 3TB+ drives under Windows XP, excluding drives used as external storage or those combined into RAID (Redundant Array of Independent Disks).”
It appears that Hitachi’s software may be an OEM version of Paragon’s GPT Loader.
