FillDisk is a utility that fills up a disk with data. It starts with 1GB files and then drops to 512MB, 256MB and so on until it fills up completely the disk with files. This application helps you testing applications when disks are approaching full capacity. FillDisk has a very simple interface, just enter a folder for the files to be created and press the "Go" button. You can stop the operation at any point in time. The file that is currently being written will close and FillDisk will stop.