Ubuntu does not start after update.

Richard G

Verified User
Jul 6, 2008
It's not really DA related, but a friend of mine has an Ubuntu 18.04 server.
Last night he just did a apt-get update and apt-get upgrade and everything was working find. There was a notice that there was a new grub and if he wanted to use that or keep the current for the moment. He choose the latter. Then dan update went 4 grub lines updates also gave OK, not a single error.

So just to be sure after updating, he rebooted the server. But the server did not came back up anymore.
Looks like the server is starting in single user mode when the datacenter starts it, or at least then a ping reply appears. On a normal boot, there will never be a ping reply.
Server is reachable via vKVM, I had a look in the syslog for him, but I can't find anything wrong.
Had a look at /boot/grub but there is only 1 kernel and grub and stuff (in Centos at least 3). Probably grub2 is used or no grub at all because the system contains 16 TB in raid 1.

I normally only work with Centos myself and not with Ubuntu. It's odd anyway that the system does not boot into the os after a simple upgrade via apt-get.

Anybody had the same problem? Or a clue on where (how) to look, or how to fix this?
My friend does not have any knowledg at all, so I would like to help him.