The program will calculate and then display all your files and folders in a hierarchical view.
TreeSize Free tells you where the disk space has gone. This article talks about two freeware programs for both Windows XP and Windows Vista/Windows 7 users to achieve the goal. Hence you need to install disk analyzers to analyze the file and folder sizes, and see which ones you can get rid of. One of them being the inability of Windows Explorer to display the folder size immediately you have to move your mouse cursor on the folder icon, or select “Properties” in the right-click menu to obtain detailed information on folder size (it does display the file size though). Windows by default provides basic information in Windows Explorer, but there are some limitations. At this time, it’s a good idea to do a little maintenance and see which files are occupying most of the space so that you can plan a clean-up.
After a few months of using your computer, you might find that the free space in your hard disk partition has reduced significantly, thanks to all those files and folders you’ve stored.
