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How to Restore Metaboxes, Custom Fields After Upgrade into WordPress Version 3.1
Enable the check boxes according to your need, what fields should be visible in your editor screen. Thats all. In feature selective fields will be visible in your editor screen. If you want to show it permanently, Following hack will do the trick. Simply edit functions.php file in your theme folder and add the following code and save it.
This Code Past on function.php
// Change what’s hidden by default
add_filter(‘default_hidden_meta_boxes’, ‘be_hidden_meta_boxes’, 10, 2);
function be_hidden_meta_boxes($hidden, $screen) {
if ( ‘post’ == $screen->base || ‘page’ == $screen->base )
$hidden = array(‘slugdiv’, ‘trackbacksdiv’, ‘postexcerpt’, ‘commentstatusdiv’, ‘commentsdiv’, ‘authordiv’, ‘revisionsdiv’);
// removed ‘postcustom’,
return $hidden;
}