diff --git a/config.php.template b/config.php.template
index cb94726..0e571ab 100644
--- a/config.php.template
+++ b/config.php.template
@@ -12,6 +12,7 @@ define("ADDRESS", "##address##");
 define("POLICY_MAIL", "##policy_mail##"); //contact email in policy
 define("POLICY_PHONE", "##policy_phone##");
 define("WHO_WE_ARE","##who_we_are##");
+define("POLICY_URL","##policy_url##");
 define("INSTALL_OVERRIDE", false);
 define("DEFAULT_LANGUAGE", "en_GB");
 
diff --git a/install.php b/install.php
index 426db4e..2c1b407 100644
--- a/install.php
+++ b/install.php
@@ -2,6 +2,8 @@
 require_once("template.php");
 define("WEB_URL", "."); //Website name
 define("NAME", _('Status page')); //Website name
+define("MINIMUM_PHP_VERSION", "5.4.0");
+define("POLICY_URL", "policy.php"); //Default policy URL
 require_once("classes/locale-negotiator.php");
 
 $negotiator = new LocaleNegotiator("en_GB");
@@ -126,6 +128,8 @@ if(isset($_POST['server']) && empty($message))
 		$config = str_replace("##policy_mail##", $_POST['policy_mail'], $config);
 		$config = str_replace("##policy_phone##", $_POST['policy_phone'],$config);
 		$config = str_replace("##who_we_are##", $_POST['who_we_are'], $config);
+		$policy_url_conf = ( ! empty($_POST['policy_url']) ) ? $_POST['policy_url'] : POLICY_URL;
+		$config = str_replace("##policy_url##", $policy_url_conf, $config);
 		file_put_contents("config.php", $config);
 		
 
@@ -138,6 +142,50 @@ if(isset($_POST['server']) && empty($message))
 }
 Template::render_header(_("Install"));
 ?>
+<h1 class="text-center"><?php echo _("Prerequisite");?></h1>
+<summary><?php echo _("If any of the following prerequisites are shown as failed (red X), please correct the issue and reload the page before proceeding with the installation.");?></summary>
+<?php
+
+
+	$php_version_req = sprintf(_("Minimum PHP version %s"), MINIMUM_PHP_VERSION);
+    $preq_fail = array("remove", "danger");
+	$preq_ok   = array("ok", "success");
+
+	$preq_phpver = $preq_fail;
+	$preq_mysqlnd = $preq_fail;
+	$preq_writedir = $preq_fail;
+
+	// Check if PHP version if > MINIMUM_PHP_VERSION
+	if (strnatcmp(phpversion(), MINIMUM_PHP_VERSION) >= 0) { $preq_phpver = $preq_ok; }
+
+	// Test for mysqlnd precense.  The mysqlnd driver provides some extra functions that is not available 
+	// if the plain mysql package is installed, and mysqli_get_client_stats is one of them. This is documented 
+	// on the PHP site at http://www.php.net/manual/en/mysqlnd.stats.php
+	// This test is also discussed at https://stackoverflow.com/questions/1475701/how-to-know-if-mysqlnd-is-the-active-driver
+	if ( function_exists('mysqli_get_client_stats') ) { $preq_mysqlnd = $preq_ok; }
+
+	// Check if we have access to write to location
+	if ( is_writable(__DIR__) ) { $preq_writedir = $preq_ok; }
+
+?>
+    <section class="prereq-section clearfix">
+  		<div class="container-fluid">
+			<div class="row ">
+		    	<div class="col-md-6 text-right"><label for="php version"><?php echo $php_version_req;?></div>
+	            <div class="col-md-6"><a href="#" class="btn btn-<?php echo $preq_phpver[1];?>"><span class="glyphicon glyphicon-<?php echo $preq_phpver[0]; ?>"></span></a></div>
+			</div>
+			<div class="row ">
+		    	<div class="col-md-6 text-right"><label for="mysqlnd Library installed"><?php echo _('PHP mysqlnd library installed');?></div>
+	            <div class="col-md-6"><a href="#" class="btn btn-<?php echo $preq_mysqlnd[1];?>"><span class="glyphicon glyphicon-<?php echo $preq_mysqlnd[0]; ?>"></span></a></div>
+			</div>
+            <div class="row">
+				<div class="col-md-6 text-right"><label for="write_access"><?php  echo _('Write access to web directory');?></div>
+	            <div class="col-md-6"><a href="#" class="btn btn-<?php echo $preq_writedir[1];?>"><span class="glyphicon glyphicon-<?php echo $preq_writedir[0]; ?>"></span></a></div>
+			</div>
+		</div>
+
+	</section>
+
 <h1 class="text-center"><?php echo _("Installation");?></h1>
 <?php
 if (!empty($message))
@@ -197,6 +245,12 @@ if (!empty($message))
 		<div class="form-group clearfix">
 			<div class=""><label for="who_we_are"><?php echo _("Who we are");?>: </label><textarea class="form-control" id="who_we_are" rows="3" name="who_we_are" placeholder="<?php echo _("Some info about yourself");?>" value="<?php echo ((isset($_POST['who_we_are']))?htmlspecialchars($_POST['who_we_are'], ENT_QUOTES):'');?>"></textarea></div>
 		</div>
+		<div class="form-group clearfix">
+			<div class="col-sm-12"><label for="url"><?php echo _("External Policy Url");?>: </label>
+				<summary><?php echo _("If you alredy have an existing Policy published, please provide the full Url to override the local policy definition. Leave blank to use the local definition");?></summary>
+				<input type="policy_url" name="policy_url" value="<?php echo ((isset($_POST['policy_url']))?htmlspecialchars($_POST['policy_url'], ENT_QUOTES):'');?>" id="policy_url" placeholder="<?php echo _("External Policy Url");?>" class="form-control">
+			</div>
+		</div>
 	</section>
 	<section class="install-section clearfix">
 		<h2><?php echo _("User");?></h2>
diff --git a/template.php b/template.php
index b5177d9..782f19e 100644
--- a/template.php
+++ b/template.php
@@ -138,7 +138,7 @@ class Template{
     <div id="footerwrap">
       <div class="container">
         <div class="row centered">
-          <div class="col-md-4 text-left">Copyright © <?php echo date("Y");?> Vojtěch Sajdl</div>
+          <div class="col-md-4 text-left"><a href="https://github.com/Pryx/server-status/" target="_blank"><i class="fab fa-github" aria-hidden="true"></i>&nbsp;</a>Copyright © <?php echo date("Y");?> Vojtěch Sajdl</div>
           <div class="col-md-4 text-center">
             <div class="btn-group dropup">
               <button type="button" class="btn btn-primary"><?php echo '<img src="'.WEB_URL.'/locale/'.$_SESSION['locale'].'/flag.png" alt="'.$lang_names[$_SESSION['locale']].'">'.$lang_names[$_SESSION['locale']];?></button>
@@ -157,7 +157,7 @@ class Template{
               </div>
             </div>
           </div>
-          <div class="col-md-4 text-right"><a href="policy.php">Imprint & Privacy Policy</a><a href="https://github.com/Pryx/server-status/" target="_blank"><i class="fab fa-github" aria-hidden="true"></i></a></div>
+          <div class="col-md-4 text-right"><a href="<?php echo POLICY_URL; ?>"><?php echo _("Imprint & Privacy Policy");?></a><!-- <a href="https://github.com/Pryx/server-status/" target="_blank"><i class="fab fa-github" aria-hidden="true"></i></a> --></div>
         </div><!--/row -->
       </div><!--/container -->
     </div>