$config['list'][] = array(
        'title' => 'Disk Usage /partition',
        'lowerLimit' => 0,
        'altAutoscaleMax' => true,
        'content' => array(
                array(  
                        'type' => 'AREA',
                        'source' => 'diskinfo',
                        'ds' => 'freediskspace',
                        'cf' => 'AVERAGE',
                        'legend' => 'Free Disk',
                        'color' => 'FF0000'
                ),
                array(  
                        'type' => 'AREA',
                        'source' => 'diskinfo',
                        'ds' => 'availablediskspace',
                        'cf' => 'AVERAGE',
                        'legend' => 'Total Diskspace',
                        'color' => 'FFFF00'
                )
        )
);