Ubuntu not loading even from a boot pen drive (purge qt*)

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http://askubuntu.com – Lets say i accidentally used - sudo apt-get purge qt* And accindentally wrote my root password. And now i can´t reboot my 12.10, i already tried grub recover package, and boot pendrives with 12.10 and 13.04 And root terminal from grub wont connect to internet. What can i do now to avoid losing all my documents?‎ (HowTos)