第一条命令
[b]sudo gedit /etc/apt/sources.list[/b]
编辑你的源列表，添加下面列表中你觉得适合你的，复制到你的列表中，然后保存列表。
Archive.ubuntu.com更新服务器（欧洲，此为官方源，电信网通用户使用)：
deb http://archive.ubuntu.com/ubuntu/ jaunty main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multiverse
网易163更新服务器：
deb http://mirrors.163.com/ubuntu/ jaunty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-backports main restricted universe multiverse
Mirrors.shlug.org更新服务器（电信服务器，Ubuntu China Official Mirror, maintained by Shanghai Linux User Group）：
deb http://cn.archive.ubuntu.com/ubuntu jaunty main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu jaunty-security main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu jaunty-updates main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu jaunty-backports main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu jaunty-proposed main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu jaunty main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu jaunty-security main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu jaunty-updates main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu jaunty-backports main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu jaunty-proposed main restricted universe multiverse
Mirror.lupaworld.com更新服务器（浙江省杭州市双线服务器，推荐）：
deb http://mirror.lupaworld.com/ubuntu jaunty main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-security main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-proposed main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-security main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-updates main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-backports main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-proposed main restricted universe multiverse
厦门大学更新服务器（教育网服务器）：
deb ftp://ubuntu.realss.cn/ubuntu/ jaunty main restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ jaunty-backports restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ jaunty-proposed main restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ jaunty-security main restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ jaunty main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ jaunty-security main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ jaunty-updates main restricted universe multiverse
成都市 电子科技大学更新服务器（教育网，推荐校园网和网通用户使用）：
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
== 如果无法解析uestc.edu.cn域名，请使用以下地址 ==
deb http://ubuntu.dormforce.net/ubuntu/ jaunty main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-security main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-updates main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-updates main multiverse restricted universe
上海市上海交通大学更新服务器（教育网，推荐校园网和网通用户使用）：
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
中国科学技术大学更新服务器（教育网，推荐校园网和网通用户使用）：
deb http://debian.ustc.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
中国台湾 台湾大学更新服务器（推荐网通用户使用，电信PING平均响应速度41MS。强烈推荐此源，比较完整，较少出现同步问题）：
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-backports main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-security main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-proposed main restricted universe multiverse
mirror.rootguide.org更新服务器（上海市 电信）：
deb http://mirror.rootguide.org/ubuntu/ jaunty main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-backports main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-security main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-proposed main restricted universe multiverse
台湾的官方源速度也相当不错，有时甚至快于内地的：
deb http://tw.archive.ubuntu.com/ubuntu jaunty main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-security main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-updates main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-backports main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-proposed main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-security main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-updates main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-backports main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-proposed main restricted universe multiverse
第二条命令
sudo apt-get update
更新源列表信息
第三条命令
sudo update-manager -d
运行更新管理器，你会看到下图，点击升级
发行版升级
此后就是漫长的等待，选择好的源很重要，会节省很多下载的时间，下载完后配置新的系统，重启系统，就是9.04了。
如果你迫不及待想体验的话，那就按照本文开始吧！Just do it!
享受开源，享受ubuntu！
chyf3942 于 2009-05-14 16:56:18发表:
有空再说吧，先收藏
yhzm1314 于 2009-05-12 15:20:41发表:
不错,有空给我朋友的8.10升级一下(其实用他机子做小白鼠,呵呵)
lazyhaha 于 2009-05-12 13:59:25发表:
太好了，谢谢。
rexlee8776 于 2009-04-30 10:35:38发表:
谢谢分享，受教了。。。
matcher 于 2009-04-28 00:31:50发表:
Yes！我就是按照这个升级成功的！
htplove 于 2009-04-27 14:35:57发表:
好详细
谢谢
coore 于 2009-04-25 02:07:28发表:
我所见到的最好的升级讲解。
lee_ruin 于 2009-04-24 14:55:22发表:
本着学习的态度,先升级,实在不行过段日子再重新装.
小普林斯 于 2009-04-22 19:07:58发表:
5# caihong06
我觉得也是，尤其是ext4，我决定重新安装！
caihong06 于 2009-04-22 18:55:59发表:
升级到9.04可能造成很多系统问题，不如全新安装的好
Creation 于 2009-04-22 18:08:59发表:
太强大了
小普林斯 于 2009-04-22 17:44:09发表:
但是怎样才能从ext3升级到ext4呢？
末日逐沙 于 2009-04-22 17:40:40发表:
不错，比我的形象多了，有种转贴的冲动