diff --git a/packages/tools/bcm2835-bootloader/files/create_sdcard b/packages/tools/bcm2835-bootloader/files/create_sdcard
index 3ea03b69b9..ac8219b9f3 100755
--- a/packages/tools/bcm2835-bootloader/files/create_sdcard
+++ b/packages/tools/bcm2835-bootloader/files/create_sdcard
@@ -43,6 +43,8 @@ if [ -z "$1" ]; then
   echo "# example: sudo ./create_sdcard /dev/sdb                #"
   echo "# or:      sudo ./create_sdcard /dev/mmcblk0            #"
   echo "# or:      sudo ./create_sdcard /dev/loop0 ~/vSD.img    #"
+  echo "# to create an image file for /dev/loop0 option:        #"
+  echo "#   sudo dd if=/dev/zero of=~/vSD.img bs=1M count=910   #"
   echo "#########################################################"
   exit 1
 fi