Lack of space in a storage device is one of the most common problems that generate incidents in the information systems.

Windows systems are no exception, and know the largest locations of occupied space in a disk partition helps quickly take decisions, such as deleting files that are not necessary, moving them to another location or expanding space.

To find out the used space from each folder within a given folder, I developed with C language this tiny command line tool: diresp3.exe.

Put the diresp3.exe file in a PATH location as C:\Windows\system32, then open the command line prompt and go into the folder where you want to know its size and run diresp3.exe directly. The result is a sizes-sorted list of the current subfolders.