Windows NT 3.1 build 297

Windows NT 3.1 build 297.1 is the official July 1992 preliminary release of Windows NT 3.1, distributed to developers for evaluation. KenOath first claimed to have this build, then it was leaked in April 2011, along with the October 1991 and December 1991 builds.

New features and changes

 * The default installation directory is now "WINNT" instead of "NT".
 * The developer apps are no longer installed by default, as they are moved to a separate application development disk.
 * This build can now properly shut down and introduces the safe to shutdown dialog that would be kept until early Windows 2000 builds.
 * This build contains Sound Blaster support out of the box, and thus can play system sounds properly with a proper driver. Most of the Windows 3.0 MME sounds has been removed and replaced with the Windows 3.1 sounds.
 * This build has an option to format the system partition with NTFS during setup, but it doesn't work since it's still just a placeholder.
 * It is the first build to include the NTVDM (NT virtual DOS machine).

File differences
The following files have been introduced or removed compared to build 239: