Windows NT 3.5 build 612

Windows NT 3.5 build 612.1 is the official Beta 1 release of Windows NT 3.5, available in the English and Japanese languages.

You must either create a bootdisk to install this build or upgrade from Windows NT 3.1.

It is the first known build to include the  launch parameter in   to install from an MS-DOS prompt.

NFO file
NFO contents