Why won't the server start?

Question

CentOS

There is a container on KVM virtualization with Centos 7 It
stopped starting all of a sudden
During the boot, this is what it gives out:

It does not allow to log in writes login incorrect
Where to dig?

Answer 1

Pick the bootloader. Your mounted root has fallen off. If you haven't tinkered with it, then I have bad news about your drive.