When building a new system, some motherboards may provide new ATA or ATAPI disk device drivers that are optimized for the OEM system. The Windows XP or Windows 2000 operating system installation will pause briefly and ask for you to insert an OEM floppy diskette. This pause for new "adapter" drivers happens soon after the boot near the beginning of the installation. See your system documentation for specifics. These drivers may have 137GB limitations. Be sure to check for driver updates. Even with new device drivers, the latest Service Pack from Microsoft must be installed to ensure support for large drives. If this is the only drive in your system and your version of Windows predates the Service Packs listed above, initially, you may still need to limit the maximum partition size to 137GB. Then to download the latest Service Pack for Windows XP or 2000, visit http://support.microsoft.com. See also the http://support.microsoft.com Knowledgebase articles that explain how to enable large drive support after the Service Packs are installed. For Windows XP SP1 see article Q303013:"How to Enable 48-bit Logical Block Addressing Support for ATAPI Disk Drives in Windows XP". For Windows 2000 SP3 see article Q305098:"48-bit LBA Support for ATAPI Disk Drives in Windows 2000".

also see: http://support.microsoft.com/?kbid=331958