fix install.sh no configuration file

install.sh

@@ -65,6 +65,7 @@ function choose_default {
 	PS3="Choose default storage number: "
 	echo "TYPE=ZFSPOOL STORAGE LIST:"
 	echo "--------------------------"
+	storage_disk="${storages[0]}"
 	select storage_disk in "${storages[@]}"; do
 		[[ -n $storage_disk ]] && break
 	done