PC/IX 4.x

Interactive UNIX, also known as PC/IX, and 386/ix were UNIX derivitives created for the IBM PC in the early 1980's. PC/IX was the first UNIX sold directly from IBM, but not the first UNIX sold for the IBM PC. (Venix/86 was the first.) The original PC/IX software sold was on 19 floppy disks and sold for 900 dollars. In 1985, 386/ix was introduced, later named Interactive UNIX. The last version released was 4.1.1 in July 1998 and was supported up until 2006.

Originally from INTERACTIVE Systems Corporation (ISC) that was purchased in 1991 by Sun Microsystems, INERACTIVE UNIX is an operating system based on Unix System V 3.2. It was marketed for use on desktop PCs rather than servers, and competed against SCO Unix.

As an i386 desktop operating system, it did not initially compete directly against Sun's SPARC based Solaris operating system.

The last version was INTERACTIVE UNIX System V/386 Release 3.2 Version 4.1.1.

Manuals can be found here: http://www.tenox.net/docs/

Serial number 5545-5409-0e21
Authorization code 949694375

Product type
Sun Microsystems
Release date
Minimum CPU
User interface


Download Name Version Language CPU File type File size
INTERACTIVE UNIX System V386 Release 3.2 Version 4.1 (3.5-1.44mb) System V386 Release 3.2 Version 4.1 English x86-32 3½ Floppy 12.79MB
INTERACTIVE UNIX System V386 Release 3.2 Version 4.1.1 (3.5-1.44mb) System V386 Release 3.2 Version 4.1.1 English x86-32 3½ Floppy 16.24MB


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