I recently installed a Windows 2000 (Professional) OS onto my cobbled together system into the H partition. I still have Windows NT (Sp 6a) on another partition (C). All partitions are NTFS. I want to de-install Windows 2000 from the its partition so that I can upgrade the existing Windows NT to Windows 2000. But, there seems to be no way I could find to de-install the Windows 2000 from either the installation CD nor the control panel. How can I proceed? Just deleting all files from the H partition, I think, could the Loader to mis-behave (Can the Loader be manipulated directly?). I would rather not have two OS to contend with if at all possible. Thank you.