Hello, everyone.   I recently did a fresh install of Microsoft Windows NT 4.0 Workstation inside Virtual PC 2004, allocated 64 MB memory to the VM, created a fixed 4 GB hard disk (4,095 MB) image, partitioned and formatted the hard disk as NTFS v1.2 file system. Windows NT 4.0 installed without a hitch.   However, when I used a disk mounting utility called IMDisk to view the contents of the partition formatted as NTFS, Windows 2000, the host OS upgraded the NTFS partition to version 3.0.