One Grub, two systems, no solution after all.

[Rob]

Chuck Hallenbeck <chuckhallenbeck at gmail.com> wrote:
> But the messages I'm seeing all seem to be systemctl related, i.e.
> about locating the network, starting sound output, etc.
> I can't quote them too easily since the login prompt clears the screen.
 
I don't know if you can shut that off, because it's not coming from the kernel; it's coming from systemd, like you say.
There might be something you can turn off and on in
/etc/systemd/journald.conf
however. That might be worth investigating.