clDisks is a System Utilities software developed by CyLog Software. After our trial and test, the software is proved to be official, secure and free. Here is the official description for clDisks:
clDisks is a very simple utility that displays the free and total size of your hard disks. By Default it will display the sizes of all your fixed disks and the full totals. You can specify a string of drive letters on the command line to restrict the list of drives displayed. you can free download clDisks 1.02 now.