Re-Index Folders or Volumes

Q.1: HOW TO RE-INDEX FOLDERS OR VOLUMES
From the Apple menu, choose System Preferences.

* Click Spotlight.
* Make sure Mail Messages is checked under the Search Results tab.
* Click the Privacy tab.
* Drag your hard drive to the list.
* Remove the item or volume you just added.
* Spotlight will re-index the contents of the item you initially dragged to the list.