diff --git a/script/lib.sh b/script/lib.sh
index 7c874a6..18a412a 100644
--- a/script/lib.sh
+++ b/script/lib.sh
@@ -70,7 +70,7 @@ function confirmation(){
 		return 1 # with error status
 	fi	# if YES
 
-	# For sure ask to be sure to erase. 
+	# For sure ask to erase. 
 	if [ "${ERASEALL}" -ne 0 ] ; then
 		echo "Are you sure you want to erase entire ${DEV}? [Y/N]"
 		read -r YESNO
@@ -78,6 +78,19 @@ function confirmation(){
 			cat <<-HEREDOC 
 		...Check your config.sh. The variable ERASEALL is ${ERASEALL}.
 
+		...Installation process terminated..
+		HEREDOC
+		return 1 # with error status
+		fi	# if YES
+
+	# For sure ask to overwrite. 
+	if [ "${OVERWRITEINSTALL}" -ne 0 ] ; then
+		echo "Are you sure you want to overwrite ${LVROOTNAME} in ${VGNAME}? [Y/N]"
+		read -r YESNO
+		if [ "${YESNO}" != "Y" ] && [ "${YESNO}" != "y" ] ; then
+			cat <<-HEREDOC 
+		...Check your config.sh. The variable OVERWRITEINSTALL is ${OVERWRITEINSTALL}.
+
 		...Installation process terminated..
 		HEREDOC
 		return 1 # with error status