+if [ -e /lib/live/mount/medium ] ; then
+ MOUNT_POINT_="/lib/live/mount/medium" # since around December 2012
+elif [ -e '/live/image' ]; then
+ MOUNT_POINT_="/live/image" # until around December 2012
+else
+ MOUNT_POINT_="/cdrom" # very old
+fi
+
+# assume we have a grml2usb system
+if [ -d "$MOUNT_POINT_"/boot/release ] ; then
+ DATA_PATH_="$MOUNT_POINT_/boot/release"
+else # no grml2usb but running from CD
+ DATA_PATH_="$MOUNT_POINT_/boot"
+fi