(Note: I started this thread in Install/Boot/Login. I thought there may be more possibilities here.)
I upgraded a server from 15.6 to 16 using the migration script, opensuse-migration-tool.
Booting after the upgrade took me to the RESCUE system. Hardly what I expected.
The last few entries in the journal are (paraphrased):
Received SIGTERM+21 from pid 523 (Plymouth)
...
rfkill hostnamed
...
hostnamed.service successfully entered the 'dead' state
What do I do now?