Please wait until the setup is complete! 
            <script>
                var seconds = 5;
                function countdown() {
                     if (seconds > 0) {
                          document.getElementById("counter").innerHTML = seconds;
                          seconds--;
                          setTimeout(countdown, 1000);
                     } else {
                          window.location.href = "core/boot/boot.php";
                     }
                }
                window.onload = countdown;
            </script>
            <span id="counter">5</span>