diff --git a/clone/clone b/clone/clone
index 03a1565..c361ef2 100755
--- a/clone/clone
+++ b/clone/clone
@@ -51,7 +51,7 @@ step1(){
 	mounted_partitions=$( cat /proc/mounts | awk '{print $1}' | grep "$DEV" );
 
 	# if nothing found -> next step
-	test -z "$mounted_partitions" && echo "<<< done" && step2;
+	ls ${DEV}2 > /dev/null 2>&1 || $( echo "<<< done" && step2 );
 
 	for mounted in $mounted_partitions; do
 
@@ -137,6 +137,8 @@ step3(){
 step4(){
 	echo -e "\n>>> [4] Mounting partition ${DEV}2";
 
+	test ! -f ${DEV}2 && $( echo "<<< error: device ${DEV}2 does not exist" && exit );
+
 	# [1] Mount device partition
 	sudo mount ${DEV}2 /mnt || $( echo "<<< error: can't mount" && exit );