ububtu10.04,11.10在線升級成ubuntu12.04LTS

1,最好用系統自帶的apt源，我用163的源升級沒有成功 tao@tao-desktop:~$ grep -v ^# /etc/apt/sources.list|grep -v ^$ deb http://cn.archive.ubuntu.com/ubuntu/ precise main restricted deb-src http://cn.archive.ubuntu.com/ubuntu/ precise main restricted deb http://cn.archive.ubuntu.com/ubuntu/ precise-updates main restricted deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-updates main restricted deb http://cn.archive.ubuntu.com/ubuntu/ precise universe deb-src http://cn.archive.ubuntu.com/ubuntu/ precise universe deb http://cn.archive.ubuntu.com/ubuntu/ precise-updates universe deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-updates universe deb http://cn.archive.ubuntu.com/ubuntu/ precise multiverse deb-src http://cn.archive.ubuntu.com/ubuntu/ precise multiverse deb http://cn.archive.ubuntu.com/ubuntu/ precise-updates multiverse deb-src http://cn.archive.ubuntu.com/ubuntu/ precise-updates multiverse deb http://security.ubuntu.com/ubuntu precise-security main restricted deb-src http://security.ubuntu.com/ubuntu precise-security main restricted deb http://security.ubuntu.com/ubuntu precise-security universe deb-src http://security.ubuntu.com/ubuntu precise-security universe deb http://security.ubuntu.com/ubuntu precise-security multiverse deb-src http://security.ubuntu.com/ubuntu precise-security multiverse deb http://archive.canonical.com/ precise partner 2，開始更新 tao@tao-desktop:~$ sudo update-manager -d 彈出更新管理器，發現有新的版本12.04LTS,雙擊升級即可