do not report sd[a-z] if there are sd[a-z][1-9]

function get_mnt_dev()

{

	$partitions = get_partitions();

	$devices = array();

	$fs_types = array();

	foreach ($partitions as $partition => $size) {

		$res = array();

		$dev = "/dev/" . $partition;

	// filter out partitions with file system 

	$i = 0;

	$raw_devices = array();

	print_r($names);

	print_r($devices);

	foreach ($names as $name => $size) {

		$found = false;

		foreach ($devices as $device) {

		}

	}

	//special case

	if (count($raw_devices)>1) {

            foreach($raw_devices as $k=>$v){

                if (preg_match('/sd[a-z][0-9]/',$k)==0) {

                    unset($raw_devices[$k]);

                }

            }

	}

	print_r($raw_devices);

	return $raw_devices;

}