1，查看当前的内核信息
uname -a Linux liudong 3.13.0-39-generic #66-Ubuntu SMP Tue Oct 28 13:30:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
2, 查看系统中已安装的内核列表
dpkg --get-selections|grep linux-image linux-image-3.13.0-24-generic deinstall linux-image-3.13.0-32-generic deinstall linux-image-3.13.0-35-generic deinstall linux-image-3.13.0-36-generic deinstall linux-image-3.13.0-37-generic install linux-image-3.13.0-39-generic install linux-image-extra-3.13.0-24-generic deinstall linux-image-extra-3.13.0-32-generic deinstall linux-image-extra-3.13.0-35-generic deinstall linux-image-extra-3.13.0-36-generic deinstall linux-image-extra-3.13.0-37-generic install linux-image-extra-3.13.0-39-generic install linux-image-generic install
3，更新grub
sudo update-grub
原文：http://www.cnblogs.com/mliudong/p/4127697.html