I just upgraded Ubuntu 14.10 to 15.04. When booting system with systemd it only gets to login screen. After login following message is printed:
/usr/lib/update-notifier/update-motd-fsck-at-reboot: 33:
/usr/lib/update-notifier/update-motd-fsck-at-reboot: cannot create
/var/lib/update-notifier/fsck-at-reboot: Read-only file system
When I change kernel parameter ro to rw system boots normally.
Booting with upstart also works. So seems it's specific to systemd problem.
UPDATE:
As Ben pointed in comments problem was caused by incorrect UUIDs for partitions in \etc\fstab file. Command to check valid UUIDs ls -al /dev/disk/by-uuid/*.
eand go to line started withlinuxthere will beroparameter change that torw. This change will be in effect only for one boot. To change it permanently you need to modifyrotorwin\etc\grub.d\10_linuxfile. But this is unrecommended practice. Better you can changesystemdtoupstartas default service manager: wiki.ubuntu.com/… – Grigoriy Mikhalkin Apr 25 '15 at 6:52