Could not update ICEauthoruity File In Centos

Note - No Need to worries you will fix in Minute

Step - 1 Insert DVD of OS

Step - 2 Go to Rescue Mode

Step - 3 chroot /mnt/sysimage

Step - 4 chown -R root:root *

Step - 5 chown gdm.gdm -R /var/lib/gdm

Step - 6 chmod 600 /var/lib/gdm/.ICEauthority

reboot