怎么关闭selinux

[root@localhost ~]# gedit /etc/sysconfig/selinux

# This file controls the state of SELinux on the system.

# SELINUX= can take one of these three values:

#     enforcing - SELinux security policy is enforced.

#     permissive - SELinux prints warnings instead of enforcing.

#     disabled - No SELinux policy is loaded.

SELINUX=disabled

[root@localhost ~]# gedit /boot/grub/menu.lst

default=0

timeout=5

splashimage=(hd0,0)/grub/splash.xpm.gz

hiddenmenu

title CentOS (2.6.32-431.el6.i686)

        root (hd0,0)

        kernel /vmlinuz-2.6.32-431.el6.i686 ro root=/dev/mapper/VolGroup-lv_root nomodeset rd_NO_LUKS rd_NO_MD rd_LVM_LV=VolGroup/lv_swap crashkernel=auto vga=ask.UTF-8 rd_LVM_LV=VolGroup/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet selinux=0

        initrd /initramfs-2.6.32-431.el6.i686.img