CentOS內核升級後刪除多餘的啓動項

CentOS內核升級後，如何刪除多餘的啓動項？

1. # uname -a 查看當前內核的版本號

Linux localhost.localdomain 2.6.32-358.23.2.el6.i686 #1 SMP Wed Oct 16 17:21:31 UTC 2013 i686 i686 i386 GNU/Linux

2. # rpm -qa | grep kernel查找要刪除的版本號

kernel-firmware-2.6.32-358.23.2.el6.noarch
abrt-addon-kerneloops-2.0.8-16.el6.centos.1.i686
kernel-devel-2.6.32-358.el6.i686
dracut-kernel-004-303.el6.noarch
kernel-2.6.32-358.23.2.el6.i686
kernel-devel-2.6.32-358.23.2.el6.i686
kernel-2.6.32-358.el6.i686
kernel-headers-2.6.32-358.23.2.el6.i686
libreport-plugin-kerneloops-2.0.9-15.el6.centos.1.i686
以上是我電腦上的內核版本號，其中紅色爲要刪除的版本號

3. # yum remove kernel-devel-2.6.32-358.el6.i686
    # yum remove kernel-2.6.32-358.el6.i686
4. 查看grub.conf發現多餘的啓動項已經刪除