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A typical command line in PC DOS and, OS family Working state No longer supported Source model Initial release August 1981; 36 years ago ( 1981-08) / April 1998; 19 years ago ( 1998-04) / 2003; 15 years ago ( 2003) Platforms type Default IBM PC DOS (an for IBM personal computer disk operating system) is a discontinued operating system for the, manufactured and sold by from the early 1980s into the 2000s. Before version 6.1, PC DOS was an IBM-branded version of. From version 6.1 on, PC DOS became IBM's independent product. Contents • • • • • • • • • • • • • • • • • History [ ] The IBM task force assembled to develop the PC decided that critical components of the machine, including the operating system, would come from outside vendors. This radical break from company tradition of in-house development was one of the key decisions that made the IBM PC an industry standard. At that time private company, founded five years before by, was eventually selected for the operating system. IBM wanted Microsoft to retain ownership of whatever software it developed, and wanted nothing to do with helping Microsoft, other than making suggestions from afar.
According to task force member, The reasons were internal. We had a terrible problem being sued by people claiming we had stolen their stuff. It could be horribly expensive for us to have our programmers look at code that belonged to someone else because they would then come back and say we stole it and made all this money. We had lost a series of suits on this, and so we didn't want to have a product which was clearly someone else's product worked on by IBM people. We went to Microsoft on the proposition that we wanted this to be their product. [ ] [ ] IBM first contacted Microsoft to look the company over in July 1980.
Ipcop 1.4 20 Iso. Negotiations continued over the next months, and the paperwork was officially signed in early November. [ ] Although IBM expected that most customers would use PC DOS, the IBM PC also supported, which became available six months after PC DOS, and operating systems. IBM's expectation proved correct: one survey found that 96.3% of PCs were ordered with the $40 PC-DOS compared to 3.4% for the $240 CP/M-86. Versions [ ] PC DOS 1.x [ ]. User manual and diskette for IBM PC DOS 1.1 Microsoft first licensed, then purchased from (SCP), which was modified for the IBM PC by Microsoft employee with assistance from SCP (later Microsoft) employee. O'Rear got 86-DOS to run on the prototype PC in February 1981. 86-DOS had to be converted from 8-inch to 5. Zoe Pagnamenta more. 25-inch and integrated with the, which Microsoft was helping IBM to write.