DiskView

 

It's useful if you want to look directly at the disk, not via file browsing. For example, you can view the contents of clusters that are free. The program shows that the free disk space is not a contiguous area, and also larger files are often not on the disk in a contiguous area, but rather in several blocks. You can use this program to see if the file data is stored inside the MFT (Master File Table).