list exist disktags in AddDisk

function/common.php

@@ -1240,7 +1240,7 @@ function get_refresh_token()
     $app_url = "https://apps.dev.microsoft.com/?deepLink=".urlencode($deepLink);
     $html = '
     <form action="?AddDisk&install0" method="post" onsubmit="return notnull(this);">
-        '.getconstStr('OnedriveDiskTag').':<input type="text" name="disktag_add" placeholder="' . getconstStr('EnvironmentsDescription')['disktag'] . '" style="width:100%"><br>
+        '.getconstStr('OnedriveDiskTag').': ('.getConfig('disktag').')<input type="text" name="disktag_add" placeholder="' . getconstStr('EnvironmentsDescription')['disktag'] . '" style="width:100%"><br>
         '.getconstStr('OnedriveDiskName').':<input type="text" name="diskname" placeholder="' . getconstStr('EnvironmentsDescription')['diskname'] . '" style="width:100%"><br>
         Onedrive_Ver：<br>
         <label><input type="radio" name="Onedrive_ver" value="MS" checked>MS: '.getconstStr('OndriveVerMS').'</label><br>