[TUHS] Bootstrapping UNIX - how was it done

[Adam Koszek via TUHS]

Hi,

How was UNIX bootstrapped in the early days?

Trying to piecemeal the story with regards to what hardware was available. This video:

https://www.youtube.com/watch?v=_jefHB8IzoY

Is showing what seems to be the later stage - UNIX up and running, practical things working. But the thumbnail is a famous Thomson + Richie, both in front of the teletype terminal and PDP machine in front of its light control panel.

What editors were used for early B, B+, C and early kernel?

For bootstrapping, some aspects must have been easier: lights connected to registers and displayed on the dashboard. But some aspects must have been hard - after hitting some level of complexity with sizable programs, debugging things from the long log of teletype printout must have been interesting.

Adam