Edit File: desktop-backgrounds-default.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE wallpapers SYSTEM "gnome-wp-list.dtd"> <wallpapers> <wallpaper deleted="false"> <name>CentOS Default Background</name> <filename>/usr/share/backgrounds/default.xml</filename> <options>zoom</options> </wallpaper> </wallpapers>