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.

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IBM Personal Computer Interactive Executive 1.00, or PC/IX, was an unsuccessful single-user Unix port to the IBM PC XT based on System III Unix. PC/IX was created by Interactive Systems Corporation and sold through IBM.

Interactive Systems Corporation also later developed Advanced Interactive Executive, (AIX) based on UNIX System V for the RISC based IBM 6150 RT. However, the successors of PC/IX are 386/IX and Interactive Unix.

This software is designed to operate on an IBM PC XT model 5160. It requires a hard drive, and may require a 100% XT hardware compatible controller card. It also may not work with VGA.

A ready-to run PC/IX hard disk image is available on the PCE download page:

Wanted: Manual scan.


Category: Operating System
Platform: Unix
Release: 1984
End of Life: Unknown
RAM: Unknown
Disk Space: Unknown
Required CPU: 8088
Type: Graphical



Name Version Size Language Architecture Contents
PC-IX 1.0 (5.25-360k)  1.0 1.27 MB English x86 5.25" Floppy