R:First, The OS (for example Windows series) should be able to support 48-bit LBA mode that enables the system to run and manipulate big drive, namely, only Windows 2000 and Windows XP could achieve this goal.

Secondary, install Service Pack to let OS support large than 137GB HDD.

1. Windows XP, please download and installed the latest Service Pack 1, this can support big drive directly. For further information, please refer to Microsoft's Product Support Site:
   http://support.microsoft.com/default.aspx?scid=kb;en-us;Q303013



2. Windows 2000, please download and installed the latest Service Pack 3. For further information, please refer to Microsoft's Product Support Site:
   http://support.microsoft.com/default.aspx?scid=kb;en-us;Q305098