diff --git a/scripts/format-disk.sh b/scripts/format-disk.sh
index 82d2eb5..065f459 100755
--- a/scripts/format-disk.sh
+++ b/scripts/format-disk.sh
@@ -14,6 +14,7 @@ VGROUP=grouptoformat
 
 create_gpt() {
     echo "Create partition table."
+    wipefs -a $DISK
     parted --script $DISK mklabel gpt
     parted --script $DISK mkpart ESP fat32 0% 1GiB
     parted --script $DISK set 1 esp on