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/*.

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i have the same problem, where did you change the parameter (in fstab?)? – Ben Apr 24 '15 at 21:31
    
Hi. You can change parameter in bootloader's select screen. Press e and go to line started with linux there will be ro parameter change that to rw. This change will be in effect only for one boot. To change it permanently you need to modify ro to rw in \etc\grub.d\10_linux file. But this is unrecommended practice. Better you can change systemd to upstart as default service manager: wiki.ubuntu.com/… – Grigoriy Mikhalkin Apr 25 '15 at 6:52
    
thanks.my problem was incorrect uuids in fstab.after correcting uuids, it works! – Ben Apr 25 '15 at 12:05
    
thanks for pointing to that! i checked and indeed UUIDs was incorrect. Solved my problem. – Grigoriy Mikhalkin Apr 25 '15 at 13:52
    
i do not know why my answer was deleted?! this makes it by far more complicated to get the answer... – Ben Apr 25 '15 at 17:15

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