I would like to bring to your attention a small, free program that may be useful if you want to know which files take up a lot of space on your disk. This is the WizTree disk space analyzer. The program is completely free, works on 32 and 64 bit versions of Windows 2000, XP, Vista, Windows 7 and Windows 8. This version does not require installation on your computer and can be launched from a removable drive.

The program will quickly scan the drive and display the names and locations of the largest files. The scan results are presented as a tree or a list on the Top 1000 Largest Files tab. To delete a file, right-click on it and select Delete from the context menu. The analyzer marks system files in gray, thus protecting them from accidental deletion.

The developers claim that this tool is one of the fastest of its kind. This is explained by the fact that WizTree reads the Master File Table (MFT) directly from the disk and scanning files in this way provides a huge performance boost. It took me 10-12 seconds to scan a terabyte disk. But in this case, there is a condition: the disk must have the NTFS file system.

There is a free version, which is slightly limited in its work, but the archive contains a WizTree key generator (keygen), that is, by running it and receiving the activation code, you can run the program, specify the received data, then register the Enterprise version and enjoy the full capabilities