Breaking 2TB Option 1 - Use Windows with NTFS and GUID Partition Tables (GPT) partitions. It is possible for Windows to use NTFS partitions larger than 2TB as long as they are configured properly. Windows requires that the GUID Partition Tables be used in place of the standard Master Boot Record (MBR) partition tables. You will need Windows XP x64 Edition or Windows Server 2003 Service Pack 1, Windows Vista, or later for GPT support. (It is possible to mount and read existing GPT partitions under Windows XP and 2000 using GPT Mounter from Mediafour.; however, their MacDrive product does not support GPT partitions.) There are a couple of stipulations for GPT disks. First, the system drive on which Windows is installed can't be a GPT disk because it is not possible to boot to a GPT partition. Secondly, an existing MBR partition can't be converted to GPT unless it is completely empty; you must either delete everything and convert or create the partition as GPT. Read this Microsoft TechNet article for more details on GPT.

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