no tty active after system migration to second disk

[deloptes <deloptes@gmail.com>]

Hi community,
I recently added a ssd and moved the debian system to it. It might be not
related to this fact but I now do not see the tty login prompt
(CTRL+ALT+F1..F6). I however see it if I boot with sysvinit, so I think it
is something in systemd, but I have no idea how I can debug and fix it. 

Can someone help?

:~# systemctl status console-getty.service
● console-getty.service - Console Getty
   Loaded: loaded (/lib/systemd/system/console-getty.service; disabled)
   Active: inactive (dead)
     Docs: man:agetty(8)


:~# systemctl status getty.target
● getty.target - Login Prompts
   Loaded: loaded (/lib/systemd/system/getty.target; static)
   Active: inactive (dead)
     Docs: man:systemd.special(7)
           man:systemd-getty-generator(8)
           http://0pointer.de/blog/projects/serial-console.html



systemctl restart console-getty

hangs forever

thanks in advance