[TUHS] /usr/mdec
Dave Horsfall
dave at horsfall.org
Mon Nov 21 14:25:43 AEST 2022
On Sun, 20 Nov 2022, Norman Wilson wrote:
> I'm curious about the origin of the directory name /usr/mdec. (I am
> reminded of it because I've noticed that it lives on in at least one of
> the BSDs.)
>
> I had a vague notion that it meant `DEC maintenance' but that seems a
> bit clumsy to describe a place holding boot blocks.
As far as I know, that's right; MAINDEC was certainly on all of their
standalone diagnostic media (a beauty was DECEX, which thrashed the PDP-11
and uncovered a bug in our RK-11 controller; it screwed up on overlapped
seeks which RSX didn't use but Harvard(?) did, so DEC's view was that it
was obviously a Unix problem).
-- Dave
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