diff --git a/roles/1-prep/templates/iiab-expand-rootfs b/roles/1-prep/templates/iiab-expand-rootfs
index 48c8872ba..b28838cd0 100644
--- a/roles/1-prep/templates/iiab-expand-rootfs
+++ b/roles/1-prep/templates/iiab-expand-rootfs
@@ -33,7 +33,8 @@ if [ -f /.expand-rootfs ] || [ -f /.resize-rootfs ]; then
         growpart $ROOT_DEV $ROOT_PART_NUM
         resize2fs $ROOT_PART
 
-        # 2022-03-15: Legacy code below for microSD cards but NOT USB boot disks
+        # 2022-03-15: Legacy code below worked with Raspberry Pi microSD cards
+        # but *not* with USB boot drives, internal spinning disks/SSD's, etc.
 
         # # ASSUMES SD CARD STYLE PARTITION NAME LIKE <device>p<partition number>
         # # e.g. /dev/mmcblk0p2 mounts at /           (typical RasPiOS microSD)