Harddisk full: But don't see any specific file which has grown big?

Occasionally, I ran into this issue in my Virtual machine - that the Harddisk becomes full and I couldn't find any specific huge file like, a over-grown database (.mdf, .ldf) files and neither do I have huge amount of backup files (.bak).
 
After a little searching, I found about the Windows.edb file has grown exponentially and was taking up all the hard disk space. This file is a result of Windows Search service. Below is the problem statement from one of the Microsoft sites:
 
Problem statement:
In Windows 8 or Windows Server 2012, the Windows Search Service may bloat the Windows.edb file. When this issue occurs, the Windows.edb file grows to a very large size and consumes lots of disk space. In some instances, the file size can be larger than 50 gigabytes (GB).
 
Resolution:
To resolve this issue, install update rollup 2836988 for Windows 8 and Windows Server 2012. For more information about how to obtain this update rollup package, click the following article number to view the article in the Microsoft Knowledge Base:2836988: Windows 8 and Windows Server 2012 update rollup: May 2013
 
How to delete / shrink the huge size of Windows.edb:

1. Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.
2. Tap or click Settings.
3. In the search box, type indexing options.
4. Tap or click Indexing Options.
5. Tap or click Advanced.
6. Tap or click Rebuild on the Indexing Settings tab.
7. Tap or click OK to confirm.
   
   

Information collected from here.