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Full Discussion: Origin of the term "hotfix"
The Lounge What is on Your Mind? Origin of the term "hotfix" Post 302621691 by jim mcnamara on Tuesday 10th of April 2012 10:58:48 PM
Old 04-10-2012
Back in PDP-8 days in UNIX, RSX and in VMS, a hotfix was a change to a running system's software (like patching) that did not require the system to go offline. Timeframe: ~1979 I think was maybe the first time I heard it. IBM had hot swap disk pack components on some mainframes, so I guess that is the ultimate origin of 'hot' things.

I was old back then. I'm a lot older now.
 

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