FAT32 Logo
Copyright © 1998 Mark Russinovich and Bryce Cogswell
Last Updated April 9, 1998, Version 1.01 Read-Only
Introduction FAT32 is a FAT32 file system driver for Windows NT(R) 4.0. Once installed, any FAT32 drives present on your system will be fully accessible as native Windows NT(R) volumes. This free version provides read-only capabilities. A read/write version is for sale at the Winternals Software web site.
Recommended FAT32 Configuration Do not convert your first partition, or your NT boot partition (the one with \winnt on it), to FAT32 as there is no support in Windows NT 4.0 for reading FAT32 drives during the boot sequence.

For maximum compatibility in dual boot systems, the recommended partition configuration is to maintain a FAT partition as the first partition on the primary drive. This partition should contain Windows 95/98 as well as Windows NT and should not be used to store applications or data files. The rest of the primary disk and any other disks should be formatted with FAT32.
Notes on the Read-Only Version The read-only version of FAT32, while not supporting commands for modifying files and directories, does implement defragmentation support. Defragmenting tools for Windows NT can be used to defragment FAT32 volumes when FAT32 is installed.

Download FAT32 (read-only) for Windows NT 4.0 (715KB)

Order FAT32 (read/write) for Windows NT 4.0