diff --git a/mtm-ddwipe b/mtm-ddwipe
index 1e47516..c0bd7e2 100755
--- a/mtm-ddwipe
+++ b/mtm-ddwipe
@@ -1,77 +1,82 @@
 #!/bin/bash
 
 declare -r DEV="${1}"
+declare STARTDATE="$(date)"
 
 show_help() {
-        echo "ddwipe dev (/dev/sdX)"
-        echo ""
-        echo "Version : 0.0.3"
+	echo "ddwipe dev (/dev/sdX)"
+	echo ""
+	echo "Version : 0.0.3"
 }
 
 check_args() {
-        if [ "${1}" == "" ]; then
-                show_help
-                exit 1
-        fi
+	if [ "${1}" == "" ]; then
+		show_help
+		exit 1
+	fi
 }
 
 check_dev_exist() {
-        if [ ! -e "${1}" ]; then
-                echo "${1} is missing."
-                exit 1
-        fi
+	if [ ! -e "${1}" ]; then
+		echo "${1} is missing."
+		exit 1
+	fi
 }
 
 confirm_wipe() {
-        lsblk "${1}"
-        echo ""
-        read -r -p "Wipe ${1} (y/[n])?" CHOICE
-        case "${CHOICE}" in 
-                y|Y ) echo "";;
-                * )
-                        echo "Canceled"
-                        exit 1
-                ;;
-        esac
+	lsblk "${1}"
+	echo ""
+	read -r -p "Wipe ${1} (y/[n])?" CHOICE
+	case "${CHOICE}" in 
+		y|Y ) echo "";;
+		* )
+			echo "Canceled"
+			exit 1
+		;;
+	esac
 }
 
 wipe_dev() {
-        echo "Begin wiping device ${1}"
-        echo ""
-        echo "Start date :"
-        date
-        echo ""
-        echo "blkdiscard secure"
-        if ! blkdiscard -f -p 100G -s -v "${1}"; then
-                echo ""
-                echo "blkdiscard zero"
-                if ! blkdiscard -f -p 100G -z -v "${1}"; then
-                        echo ""
-                        echo "dd zero"
-                        if ! dd if=/dev/zero of="${1}" bs=1M status=progress; then
-                                # Need check if dd has all writed, if yes, return no error
-                                # echo "Error wiping device ${1}, use phisical destroy !"
-                                echo "Wiped with dd, check if full size is writed."
-                                echo "Otherwise use a mechanical destruction of the device."
-                                print_time
-                                exit 1
-                        fi
-                fi
-        fi
-        echo ""
-        echo "Device ${1} wipped !"
+	echo "Begin wiping device ${1}"
+	echo ""
+	echo "Start date :"
+	echo "${STARTDATE}"
+	echo ""
+	echo "blkdiscard secure"
+	if ! blkdiscard -f -p 500M -s -v "${1}"; then
+		echo ""
+		echo "blkdiscard zero"
+		if ! blkdiscard -f -p 500M -z -v "${1}"; then
+			echo ""
+			echo "dd zero"
+			if ! dd if=/dev/zero of="${1}" bs=1M status=progress; then
+				# Need check if dd has all writed, if yes, return no error
+				# echo "Error wiping device ${1}, use phisical destroy !"
+				echo "Wiped with dd, check if full size is writed."
+				echo "Otherwise use a mechanical destruction of the device."
+				print_time
+				exit 1
+			fi
+		fi
+	fi
+	echo ""
+	echo "Device ${1} wipped !"
 }
 
 print_time() {
-        ENDDATE=$(date +%s)
-        echo ""
-        echo "End date :"
-        date
+	echo ""
+	echo "Start date :"
+	echo "${STARTDATE}"
+	
+	ENDDATE=$(date +%s)
+	echo ""
+	echo "End date :"
+	date
 
-        CALCTIME=$((ENDDATE-STARTDATE))
-        echo ""
-        echo "Total time :"
-        date -d@${CALCTIME} -u +%H:%M:%S
+	CALCTIME=$((ENDDATE-STARTDATE))
+	echo ""
+	echo "Total time :"
+	date -d@${CALCTIME} -u +%H:%M:%S
 }
 
 check_args "${DEV}"