IBM had unknowingly created a juggernaut when they allowed Bill Gates and Microsoft to control the PC operating system standard, first with DOS and then with Windows. Having lost control of the PC hardware standard, IBM was determined to regain control of the operating system standard. Their weapon? The OS/2 operating system, a powerful and feature packed operating system that best case should have had little trouble overcoming Windows, and worst case should have at least been able to carve out a profitable and sustainable market share. This is the story of how IBM's last attempt to keep a measure of control in the PC space...failed.