diff --git a/roles/1-prep/templates/iiab-expand-rootfs b/roles/1-prep/templates/iiab-expand-rootfs
index 8a208a078..48c8872ba 100644
--- a/roles/1-prep/templates/iiab-expand-rootfs
+++ b/roles/1-prep/templates/iiab-expand-rootfs
@@ -3,8 +3,10 @@
 # Expand rootfs partition to its maximum size, if /.expand-rootfs exists.
 # Used by /etc/systemd/system/iiab-expand-rootfs.service on IIAB boot.
 
-# Should work with most Linux OS's, regardless whether Raspberry Pi SD cards
-# or external USB boot disks, etc.  Verifies that rootfs is the last partition.
+# Should work with all Linux OS's boot disks -- regardless whether Raspberry Pi
+# microSD cards, external USB drives, internal spinning disks or SSD's, etc.
+
+# Verifies that rootfs is the last partition.
 
 if [ -f /.expand-rootfs ] || [ -f /.resize-rootfs ]; then
     echo "$0: Expanding rootfs partition"