This morning starts with ubuntu updates installation, which unfortunately freezes at some point. I hard-rebooted my laptop and got
grub> command-line. There I tried manual boot from each of two latest linux images, but didn't succeed. I booted from USB stick instead and started boot-repair which succeeded. After reboot I got
Insert system disk in drive Press any key when ready
Suspecting that something wrong with linux image I reboot with USB stick once again and run Boot Repair with option Purge linux images and install the latest one. Boot Repair hangs on exactly on this operation during the work. I mount my laptop's / and inspect that old images was purged but no one was installed. Then I chroot'ed to it and installed latest linux package manually through apt-get. Reboot, run Boot Repair once again (w/o purge option), it succeeds, reboot once again and got back
Insert system disk in drive message. The report from last run of Boot Repair can be found here: http://paste.ubuntu.com/11958644/
Any suggestions what to do now?