In this closing episode we take a look at IBM's two pronged assault on the clone market with the launch of the the OS/2 operating system and PS/2 line of computers. Success with OS/2 would ensure that Microsoft no longer controlled the dominant operating system while success with the PS/2 line of computers would ensure that those pesky cloners would no longer be a thorn in IBM's side. But could IBM successfully develop a new operating system that would supersede MS-DOS while also creating a successful new hardware standard that was totally incompatible with existing IBM computers AND uncloneable?