diff --git a/clone/clone b/clone/clone
index c9fecd5..cebb612 100755
--- a/clone/clone
+++ b/clone/clone
@@ -1,10 +1,52 @@
 #!/bin/sh
 
-# [1] check parameters (device, ESSID, WPA)
-if [ $# -lt 3 ]; then
-	echo "Missing parameters : (device, ESSID, WPA)" && exit;
-fi;
+# [1] Check parameter : device file
+#========================================================#
 
+echo ">>> [1] Checking parameter : device";
+# (1) Check parameter existence #
+test $# -lt 1 && echo "Missing parameter : device" && exit;
+
+# (2) Check USB and not a hard drive !!!!!!!!!! #
+device_type=$(udevadm info --query=all -n $1 | grep -E "ID_BUS" | awk '{print $2}' | sed 's/ID_BUS=//');
+
+test $device_type != "usb" && echo ">>> ERROR: device type is $device_type, \"usb\" expected." && exit;
+
+echo "<<< done";
+
+
+# [2] Init device layout (gpt table)
+#========================================================#
+
+echo "\n>>> [2] Checking for mounted partitions";
+# (1) List partitions of this device #
+mounted_partitions=$( cat /proc/mounts | awk '{print $1}' | grep "$1" );
+
+for mounted in $mounted_partitions; do
+	
+	read -p "    (!) umount $mounted (y/n) [n]" unmount;
+
+	test -n "$unmount" && test $unmount = "y" && sudo umount $mounted && echo "> unmounted";
+done;
+echo "<<< done";
+
+
+# [3] Initialize GTP Table
+#========================================================#
+echo "\n>>> [3] Formatting disk";
+
+# (1) Confirmation #
+read -p"    (!) Erase the whole disk ? it is irreversible! (y/n) [n]" confirm_format;
+( test -z "$confirm_format" || test $confirm_format != "y" ) \
+	&& (echo "<<< aborting" && exit);
+
+# (2) Init gpt entry #
+echo " ))) replace by real code (((";
+# echo -e "g\nw" | fdisk $1";
+
+
+
+exit;
 
 
 # [2] Formatting USB #