Yesterday I was making upgrade (from 11.04 to 12.04) when I have got power failure. I don't known where the installer was, because I wasn't in the front of computer at that moment. After restart Ubuntu started to version 12.04 and everything looks OK. But - I'm not sure if everything was installed correctly? How can I check it or how can I "restart" my automatic upgrade tool to do everything again and "to the end"? Some more infomations: lsb_release -a: No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04 LTS Release: 12.04 Codename: precise uname -r: 3.2.0-24-generic apt-get found five updates: linux-headers-3.2.0-24 linux-headers-3.2.0-24-generic linux-image-3.2.0-24-generic linux-libc-dev ubuntu-docs unity-scope-musicstores