To be able to adjust indexing options; go to Control Panel, then Performance Information and Tools. On the left side menu, click on “Adjust indexing options”.
The screen below should pop-up. From the module, you would be able to adjust settings for indexing.
What is the index (from Ms help)?
Similar to the way the index in a book helps you to keep track of its contents, the index in Windows keeps track of the files on your computer. The index stores information about files, including the file name, date modified, and properties like author, tags, and rating. You will never see the index, but it is used by Windows to perform very fast searches of the most common files on your computer.
What is the index used for (from Ms help)?
The index is used to make searching for files much faster. Instead of looking through your entire hard disk for a file name or file property, Windows scans the index, which allows most results to appear in a small fraction of the time that a search without the index would take.
What files are indexed (from Ms help)?
By default, all of the most common files on your computer are indexed. Indexed locations include all of the files in your personal folder (such as Documents, Pictures, Music, and Videos), as well as e‑mail and offline files. Files that are not indexed include program files and system files. The locations that contain those files are not indexed because you rarely need to search those files, and so not including them in the index makes your searches perform faster
