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lprovenlast Saturday at 6:36 PM1 replyview on HN

> immediately went and bought QDOS

Important correction: MS did not buy QDOS -- or SCP.

It licensed it.

Some years later, when MS-DOS was a big hit, then it licensed it.

I suspect this was not in error; it was some form of protective gamble.


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canucker2016yesterday at 1:39 PM

According to Tim Paterson's blog and Paul Allen autobiography, MS bought SCP's QDOS on 1981 July 27 (MS had a non-exclusive license for QDOS to sell to OEMs). This is before the IBM PC release in August.

see https://web.archive.org/web/20190722012644/http://www.paters...

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