Xenix 386

Xenix was the variant of UNIX originally published by Microsoft, later sold to SCO. It added a variety of technical enhancements over System V Unix, including a menu-driven business shell. It was ported to many different platforms from a PDP-11 including the Altos 8600 (First x86 port), IBM PC, Intel System 86, TRS-80 Model 16, SCP Gazelle II, and Apple Lisa.

Software products include: The Xenix Software Development System, Microsoft Multiplan 2.x and Microsoft Multiplan 3.x, Microsoft Word 3.0 and Microsoft Word 5.x, and FoxBase Plus 1.00

Please note that version numbering is all over the place depending on the vendor.

Wanted: More ports for different platforms.


Release notes

Please note that the early Xenix releases are EXTREMELY buggy and are very picky about the hardware they run on.

These seem to work using the PCEM emulator, and set to hardware specifications appropriate to the time. (386 or 486 with 4 or 8 MB of RAM and an ~80MB hard drive that matches a predefined BIOS type).

Installation instructions

The standard "386" versions are for generic "AT" architectures. The "GT" versions include SCSI support. The "PS" versions are specifically for IBM PS/2 Microchannel based computers.

SCO Xenix 2.x is based on Unix System V.

Manuals are available on Bitsavers: http://www.bitsavers.org/pdf/sco/system_V_2.x/2.3.2/

The tool located here can retrieve working product keys: https://github.com/Octocontrabass/brandy

Product type
Release date
Minimum CPU
User interface
Download count
8 (1 for release)


Download name Version Language Architecture File size Downloads
SCO Xenix 386 2.2.3b (5.25-1.2mb) 386 2.2.3b English 1.96MB 0
SCO Xenix 386 2.2.3c (3.5-720k) 386 2.2.3c English 2.1MB 0
SCO Xenix 386 2.3.4q (3.5-1.44mb) 386 2.3.4q English 7.29MB 0
SCO Xenix 386GT 2.3.2f (5.25-1.2mb) 386GT 2.3.2f English 2.36MB 0
SCO Xenix 386GT 2.3.4h (3.5-1.44mb) 386GT 2.3.4h English 6.22MB 1
SCO Xenix 386PS 2.2.2f (3.5-720k) 386PS 2.2.2f English 28.37MB 0
SCO Xenix 386PS 2.2.3f (3.5-720k) 386PS 2.2.3f English 27.19MB 0


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