Systemd: how to get into rescue mode

[Volker Wysk]

Am Samstag, den 11.01.2020, 01:50 +0100 schrieb Ralf Mardorf via
ubuntu-users:
> FWIW in my experiences with PCs a real cold boot cannot be done by
> only using a power off command or PC case switch. In my experiences
> after shutting down the machine by command or the PC case switch,
> it's important to turn of the PSU by the PSU's switch or even better
> to
> pull the power plug, maybe not all PSU switches do the right thing.

Yes, I've experienced something like this, too, lately, when I was
helping a friend to install Ubuntu.

Volker