diff --git a/roles/1-prep/templates/iiab-expand-rootfs b/roles/1-prep/templates/iiab-expand-rootfs
index 90cdb9318..a1fd06772 100644
--- a/roles/1-prep/templates/iiab-expand-rootfs
+++ b/roles/1-prep/templates/iiab-expand-rootfs
@@ -33,7 +33,9 @@ if [ -f /.expand-rootfs ] || [ -f /.resize-rootfs ]; then
 
         # Expand partition
         growpart $ROOT_DEV $ROOT_PART_NUM || true    # raspi-config instead uses fdisk.  WARNING: growpart RC 2 is more severe than RC 1, and should possibly be handled separately in future?
+        rc=$?    # Make Return Code visible, for 'bash -x'
         resize2fs $ROOT_PART
+        rc=$?    # Make RC visible (as above)
 
         # 2022-03-15: Legacy code below worked with Raspberry Pi microSD cards
         # but *not* with USB boot drives, internal spinning disks/SSD's, etc.