east-tec DisposeSecure has several modules: the Windows module, the network module and the DOS-boot module.
You will be able to permanently erase an entire thumb drive, USB drive, external hard drive, floppy disk or your local non-system partition with the Windows module.
After installing east-tec DisposeSecure, under Start -> Programs, go to "east-tec DisposeSecure" and double click it. One of the options is "Erase entire local hard drive/partition". Select it, click Next and any device or partitions that appear in the list can be wiped except the system partition, where your current Windows installation is running from.