echo "mounting main filesystem ..."
  mkdir /jffs2
  mount -t jffs2 $NAND_MTD /jffs2
  mkdir /ubifs
  mkdir /union
  if ! mount -t ubifs ubi0:rootfs /ubifs; then
    echo "Failed to mount mtd5 as ubifs, falling back to tmpfs for union mount"
    mount -w -t tmpfs tmpfs /ubifs
  fi
  mount -t unionfs -o dirs=/ubifs=rw:/jffs2=ro unionfs /union
  root_mount=/union



exec switch_root -c /dev/console $root_mount /sbin/init 5