diff --git a/roles/1-prep/templates/iiab-expand-rootfs b/roles/1-prep/templates/iiab-expand-rootfs
index 82799f8d8..2cd28de46 100644
--- a/roles/1-prep/templates/iiab-expand-rootfs
+++ b/roles/1-prep/templates/iiab-expand-rootfs
@@ -11,11 +11,11 @@
 if [ -f /.expand-rootfs ] || [ -f /.resize-rootfs ]; then
     echo "$0: Expanding rootfs partition"
 
-#     if [ -x /usr/bin/raspi-config ]; then    # Raspberry Pi OS
-#         # 2022-02-17: Uses do_expand_rootfs() from:
-#         # https://github.com/RPi-Distro/raspi-config/blob/master/raspi-config
-#         raspi-config --expand-rootfs    # REQUIRES A REBOOT
-#     else                                # REQUIRES NO REBOOT; works on all OS's
+    if [ -x /usr/bin/raspi-config ]; then    # Raspberry Pi OS
+        # 2022-02-17: Uses do_expand_rootfs() from:
+        # https://github.com/RPi-Distro/raspi-config/blob/master/raspi-config
+        raspi-config --expand-rootfs    # REQUIRES A REBOOT
+    else                                # REQUIRES NO REBOOT; BEWARE iiab-expand-rootfs.service RACE CONDITION WITH fsck (PR #2522 & #3325)
         # 2022-03-15: Borrows from above raspi-config URL's do_expand_rootfs()
         ROOT_PART="$(findmnt / -o SOURCE -n)"    # e.g. /dev/sda2 or /dev/mmcblk0p2
         ROOT_DEV="/dev/$(lsblk -no pkname "$ROOT_PART")"    # e.g. /dev/sda or /dev/mmcblk0
@@ -53,7 +53,7 @@ if [ -f /.expand-rootfs ] || [ -f /.resize-rootfs ]; then
         # # Resize partition
         # growpart /dev/$root_dev $root_part_no
         # resize2fs /dev/$root_part
-#     fi
+    fi
 
     rm -f /.expand-rootfs /.resize-rootfs
 fi