Windows 1.0 Beta Release

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Win1.00 Beta boot.png
Microsoft Windows Beta Release
Architecture x86 (16-bit)
BIOS date 1985-05-07 (optional)

Windows 1.0 Beta Release is a pre-release build of Windows 1.0. It was compiled during early May 1985. This build includes an updated RTM-style installer.


This build does not have PS/2 mouse support. You can either run an emulator that has Microsoft Serial Mouse support, Or replace MOUSE.EXE with the Windows 1.0 Premiere Edition MOUSE.EXE

For high EGA Color, select, Enhanced Graphics Monitor with Enhanced Display

For this to work, you can have:

MS-DOS, or PC-DOS 2.X or 3.X, DOS 5.X/6.X but once you downloaded 1.0 Beta, add SETVER WIN100.EXE 3.30, and DOSbox: run ver set 3 30