Systemd: how to get into rescue mode

[Volker Wysk]

Am Freitag, den 10.01.2020, 21:39 +0100 schrieb Tom H:
> On Sun, Jan 5, 2020 at 10:50 AM Volker Wysk <post at volker-wysk.de>
> wrote:
> > I do this:
> > 
> > systemctl isolate rescue.target
> > 
> > Then everything is closed, and I get to a virtual console. There,
> > the
> > root password is queried.
> > 
> > Alas, there is no reaction whatsoever. I can enter the password,
> > but
> > nothing happens. Same for ctrl-d. The other virtual consoles are
> > dead.
> > Alt-ctrl-del isn't recognized, too. I need to do a hard reset.
> > 
> > The systemctl command, above, is mentioned in an article in the
> > German
> > linux magazine LinuxUser.
> 
> How about switching to a console, running "systemctl stop your_DM"
> (or
> "systemctl isolate multi-user.target"), and then "systemctl isolate
> rescue.target"?

This works! I've tried it with "systemctl isolate multi-user.target",
and then "systemctl isolate rescue.target". But, when you afterwards
type ctrl-D or "exit", it stands still with the ubuntu symbol, with the
dots under the "ubuntu" lettering. It's the same with typing "systemctl
isolate default.target" instead. So you have to do a reboot.

Cheers,
Volker