diff --git a/usr/lib/raspberrypi-sys-mods/firstboot b/usr/lib/raspberrypi-sys-mods/firstboot
index ae37d3a..752c96e 100755
--- a/usr/lib/raspberrypi-sys-mods/firstboot
+++ b/usr/lib/raspberrypi-sys-mods/firstboot
@@ -63,7 +63,7 @@ get_variables () {
 fix_partuuid() {
   mount -o remount,rw "$ROOT_PART_DEV"
   mount -o remount,rw "$BOOT_PART_DEV"
-  DISKID="$(dd if=/dev/hwrng bs=4 count=1 | od -An -tx4 | cut -c2-9)"
+  DISKID="$(dd if=/dev/hwrng bs=4 count=1 status=none | od -An -tx4 | cut -c2-9)"
   fdisk "$ROOT_DEV" > /dev/null <<EOF
 x
 i