How will we bootstrap our tech once more should every electronic device get fried by a CME? How long will it take?
These days you "just" need a C compiler to get started and in theory you can build everything, but this assumes you already have a machine you can run something, it's already compiled, you have a monitor to output video to, you already have a text editor — even if it's just vi — and so on.
I am looking for something that starts from even lower, hardware included.
So I guess my question is, should everything be destroyed but we retain all the knowledge in books, how would we start rebuilding our tech?
You could look at the devastation brought on by the recent tornadoes to see that electronic technology becomes the least of our concerns.
Just look at how well that turned out…