IBM OS2 1.00 Standard Edition
Released in 1987 by IBM
For IBM PCs and compatibles

OS/2 was originally a joint effort between IBM and Microsoft. It grew
out of efforts to create a Multitasking MS-DOS. It was intended to be
the future OS for IBM's new PS/2 series. At release it competed
against Microsoft's Windows GUI shell, but most users continued to
use DOS. OS/2 1.x was used as the basis for Citrix Multiuser

1.x was heavily criticized for its poor backwards compatibility,
heavier system requirements, design decisions made in order to
support 286s instead of just 386s, poor hardware compatiblity, and
lack of third party driver support. There was an inaccurate, but
justifiable, common belief that OS/2 could only run on genuine IBM
hardware.

Still, it was believed that all future software development would be
for OS/2, until an almost overnight fallout between IBM and Microsoft
shifted the spotlight to the yet to be developed Windows NT.

Without Microsoft's help, IBM massively re-wrote OS/2 to produce OS/2
2.x

OS/2 1.0 is command-line only. It was designed to run on a 286 or
later.

To install on a faster computer or VirtualBox, you must first apply
the OS/2 speed patches described here to the boot disk:
http://www.os2museum.com/wp/installing-os2-1-x-in-a-virtualbox-vm/

To summarize, replace all occurrences of: B8 F4 01 BB C8 00 F7 E3 F7
F1 with B8 F4 01 BB C8 00 F7 E3 90 90

You may also need to partition the disk in advance.

This archive includes four 3.5" 1.44mb floppy disk images.
