目录
查看系统内存在的内核版本列表：查看当前Ubuntu系统使用的内核版本删除多余内核更新grub
查看系统内存在的内核版本列表：
madara@Madara-PC:~$ sudo dpkg --get-selections | grep linux
[sudo] password for madara:
libselinux1:amd64 install
linux-firmware install
linux-generic-lts-wily install
linux-headers-4.2.0-41 install
linux-headers-4.2.0-41-generic install
linux-headers-4.2.0-42 install
linux-headers-4.2.0-42-generic install
linux-headers-generic-lts-wily install
linux-image-4.2.0-41-generic install
linux-image-4.2.0-42-generic install
linux-image-extra-4.2.0-41-generic install
linux-image-extra-4.2.0-42-generic install
linux-image-generic-lts-wily install
linux-libc-dev:amd64 install
linux-sound-base install
pptp-linux install
syslinux install
syslinux-common install
syslinux-legacy install
util-linux install
查看当前Ubuntu系统使用的内核版本
madara@Madara-PC:~$ uname -r
4.2.0-42-generic
删除多余内核
madara@Madara-PC:~$ sudo apt-get autoremove --purge linux-headers-4.2.0-41 linux-image-4.2.0-41-generic
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED
linux-headers-4.2.0-41* linux-headers-4.2.0-41-generic*
linux-image-4.2.0-41-generic* linux-image-extra-4.2.0-41-generic*
0 to upgrade, 0 to newly install, 4 to remove and 0 not to upgrade.
After this operation, 295 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 202891 files and directories currently installed.)
Removing linux-headers-4.2.0-41-generic (4.2.0-41.48~14.04.1) ...
Removing linux-headers-4.2.0-41 (4.2.0-41.48~14.04.1) ...
Removing linux-image-extra-4.2.0-41-generic (4.2.0-41.48~14.04.1) ...
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.2.0-41-generic /boot/vmlinuz-4.2.0-41-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.2.0-41-generic /boot/vmlinuz-4.2.0-41-generic
update-initramfs: Generating /boot/initrd.img-4.2.0-41-generic
run-parts: executing /etc/kernel/postinst.d/pm-utils 4.2.0-41-generic /boot/vmlinuz-4.2.0-41-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 4.2.0-41-generic /boot/vmlinuz-4.2.0-41-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 4.2.0-41-generic /boot/vmlinuz-4.2.0-41-generic
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.2.0-42-generic
Found initrd image: /boot/initrd.img-4.2.0-42-generic
Found linux image: /boot/vmlinuz-4.2.0-41-generic
Found initrd image: /boot/initrd.img-4.2.0-41-generic
Found memtest86+ image: /memtest86+.elf
Found memtest86+ image: /memtest86+.bin
Found Windows 7 (loader) on /dev/sda1
done
Purging configuration files for linux-image-extra-4.2.0-41-generic (4.2.0-41.48~14.04.1) ...
Removing linux-image-4.2.0-41-generic (4.2.0-41.48~14.04.1) ...
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 4.2.0-41-generic /boot/vmlinuz-4.2.0-41-generic
update-initramfs: Deleting /boot/initrd.img-4.2.0-41-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 4.2.0-41-generic /boot/vmlinuz-4.2.0-41-generic
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.2.0-42-generic
Found initrd image: /boot/initrd.img-4.2.0-42-generic
Found memtest86+ image: /memtest86+.elf
Found memtest86+ image: /memtest86+.bin
Found Windows 7 (loader) on /dev/sda1
done
The link /vmlinuz.old is a damaged link
Removing symbolic link vmlinuz.old
you may need to re-run your boot loader[grub]
The link /initrd.img.old is a damaged link
Removing symbolic link initrd.img.old
you may need to re-run your boot loader[grub]
Purging configuration files for linux-image-4.2.0-41-generic (4.2.0-41.48~14.04.1) ...
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 4.2.0-41-generic /boot/vmlinuz-4.2.0-41-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 4.2.0-41-generic /boot/vmlinuz-4.2.0-41-generic
更新grub
madara@Madara-PC:~$ sudo update-grub
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.2.0-42-generic
Found initrd image: /boot/initrd.img-4.2.0-42-generic
Found memtest86+ image: /memtest86+.elf
Found memtest86+ image: /memtest86+.bin
Found Windows 7 (loader) on /dev/sda1
done
