http://support.microsoft.com/default.aspx?scid=kb;en-us;303013
How to enable 48-bit Logical Block Addressing support for ATAPI disk drives in Windows XP
For the original release version of Windows XP Home Edition or of Windows XP Professional, you can enable 48-bit LBA for testing purposes. To do this, set the EnableBigLba registry value to 1 in the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Atapi\Parameters\
Do it at your own risk! The best solution is to install XP SP1 and up.
How to enable 48-bit Logical Block Addressing support for ATAPI disk drives in Windows XP
For the original release version of Windows XP Home Edition or of Windows XP Professional, you can enable 48-bit LBA for testing purposes. To do this, set the EnableBigLba registry value to 1 in the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Atapi\Parameters\
Do it at your own risk! The best solution is to install XP SP1 and up.