1 files changed, 8 insertions, 2 deletions
diff --git a/iso2usb.sh b/iso2usb.sh
index dbf1a93..3f86775 100644
--- a/iso2usb.sh
+++ b/iso2usb.sh
@@ -632,8 +632,14 @@ if [ $REFRESH -eq 0 ]; then
   # features enabled by default.
   # Explicitly disable 64bit feature in the mke2fs command with '-O ^64bit';
   # otherwise, the syslinux bootloader (>= 6.03) will fail.
-  mkfs.ext4 -F -F -L "${LIVELABEL}" -m 0 -O ^64bit ${TARGET}3
-  tune2fs -c 0 -i 0 ${TARGET}3
+  # Note: older 32bit OS-es will trip over the '^64bit' feature so be gentle.
+  mkfs.ext4 -F -F -L "${LIVELABEL}" ${TARGET}3
+  if ! tune2fs -O '^64bit' ${TARGET}3 1>/dev/null 2>/dev/null ; then
+    FEAT_64BIT=""
+  else
+    FEAT_64BIT="-O '^64bit'"
+  fi
+  tune2fs -c 0 -i 0 -m 0 ${FEAT_64BIT} ${TARGET}3
 
 fi # End [ $REFRESH -eq 0 ]