Root in /target : how change it?

[Gunnar Gervin]

Hi again.
How use chroot (in terminal) to place Root in /dev/sda1(147gb)
(if that is the better place for it)?
My impression of root in /target is that it isn't easy to find for PC. (Why
the installation system "commits suicide" this way so often must be a
'square mind'?)
A dysfunctional soldier, saying: 'If u don't give countable orders, I'll
translate them to "Dig a hole & stay in it until I maybe save u."
Why you accepted this 35 years?
BR,
Gunnar Gervin, trolly but no troll.