解决更新需要花去 x M 磁盘上总计 /boot 的空间。请在 磁盘上流出 /boot 空间。sudo apt-get clean

系统自动升级会安装多个内核，卸载多余的内核可以获得更多磁盘空间

root@local-Lenovo-G470:/home/local# dpkg --get-selections|grep linux //带有image的为系统内核

libselinux1
install

linux-firmware install

linux-generic install

linux-headers-3.2.0-23 install

linux-headers-3.2.0-23-generic install

linux-headers-3.2.0-24 install

linux-headers-3.2.0-24-generic install

linux-headers-3.2.0-27 install

linux-headers-3.2.0-27-generic install

linux-headers-3.2.0-29 install

linux-headers-3.2.0-29-generic install

linux-headers-generic install

linux-image-3.2.0-24-generic install

linux-image-3.2.0-27-generic install

linux-image-3.2.0-29-generic install

linux-image-generic install

linux-libc-dev install

linux-sound-base install

pptp-linux install

syslinux install

syslinux-common install

syslinux-legacy install

util-linux
install

root@local-Lenovo-G470:/home/local# uname -a //查看系统当前使用内核

Linux local-Lenovo-G470 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

root@local-Lenovo-G470:/home/local# sudo apt-get remove image-3.2.0-24-generic //卸载多余内核

正在读取软件包列表... 完成

正在分析软件包的依赖关系树

正在读取状态信息... 完成

注意，根据正则表达式 image-3.2.0-24-generic 选中了 linux-image-3.2.0-24-generic

注意，根据正则表达式 image-3.2.0-24-generic 选中了 linux-image-3.2.0-24-generic-pae

下列软件包将被【卸载】：

linux-image-3.2.0-24-generic

升级了 0 个软件包，新安装了 0 个软件包，要卸载 1 个软件包，有 90 个软件包未被升级。

解压缩后将会空出 149 MB 的空间。

您希望继续执行吗？[Y/n]y

(正在读取数据库 ... 系统当前共安装有 251973 个文件和目录。)

正在卸载 linux-image-3.2.0-24-generic ...

Examining /etc/kernel/prerm.d.

run-parts: executing /etc/kernel/prerm.d/dkms 3.2.0-24-generic /boot/vmlinuz-3.2.0-24-generic

Examining /etc/kernel/postrm.d .

run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.2.0-24-generic /boot/vmlinuz-3.2.0-24-generic

update-initramfs: Deleting /boot/initrd.img-3.2.0-24-generic

run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.2.0-24-generic /boot/vmlinuz-3.2.0-24-generic

Generating grub.cfg ...

Found linux image: /boot/vmlinuz-3.2.0-29-generic

Found initrd image: /boot/initrd.img-3.2.0-29-generic

Found linux image: /boot/vmlinuz-3.2.0-27-generic

Found initrd image: /boot/initrd.img-3.2.0-27-generic

Found memtest86+ image: /memtest86+.bin

Found Windows 7 (loader) on /dev/sda1

Found Windows Recovery Environment (loader) on /dev/sda4

done

root@local-Lenovo-G470:/home/local#