Computer Support - Determining Your NTFS Version (Windows NT/2000/XP)
Each version of 32-bit Windows comes with its own version of the NTFS file system. For example, Windows NT 4 comes with NTFS version 1.2, Windows 2000 comes with version 3.0, and Windows XP comes with version 3.1. To find out which version a particular volume is using, enter fsutil fsinfo ntfsinfo <volume>: at the command prompt. This is important to know because some NTFS volumes need to be upgraded to prevent data loss when used with other NTFS volumes.