dpkg -l 查看安装的文件
首先更新apt-get源
vim /etc/apt/sources.list
deb http://old-releases.ubuntu.com/ubuntu/ hardy main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ hardy main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ hardy-security main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ hardy-security main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ hardy-updates main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ hardy-updates main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ hardy-proposed main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ hardy-proposed main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse系统版本过旧，国内源已经没有支持，找到ubuntu官网，对老版本支持
apt-get clean
apt-get update
apt-cache search linux|grep linux-image
apt-get install linux-image-XXX-generic-pae linux-headers-XXX-generic-pae
不成功可以手动编译升级内核
下载新内核
apt-cache search linux-source
apt-get install linux-source
cd /usr/src
tar xvf linux-source-2.6.24.tar.bz2
sudo apt-get install build-essential kernel-package libncurses5-dev libqt3-headers
make menuconfig
make -j4
make modules
make modules_install
make install
生成initrd.img
mkinitramfs -o /boot/initrd.img-2.6.24.6 2.6.24.6
update-grub或者手写更新menu.lst
编译的时候碰到错误：
Include IDE/ATA-2 DISK support 如果你的/boot是放在IDE硬盘上，那么这里一定要选＊，选M都不行。否则启动时会出现“waiting for root file system”的提示而停滞不前。
ubunt 12升级
阿里云还支持12的版本
vim /etc/apt/sources.list
deb http://mirrors.aliyun.com/ubuntu/ precise main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ precise-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ precise-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ precise-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ precise main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ precise-backports main restricted universe multiverseapt-cache search linux|grep linux-image
apt-get install linux-image-3.2.0-126-generic-pae linux-headers-3.2.0-126-generic-pae
