Self-booting PC disk
Erases partitions, directories, boot records, and so on. Includes DoD specs in professional version only.
Securely erases individual files, temporary files, slack space, and so on.
Unix and PC hardware
Understands some vendor-specific commands used for bad-block management on SCSI drives. Optionally verifies writes. Implements all relevant DoD standards and allows custom patterns.
Uses Gutmann's erase patterns. Erases single files and accompanying metadata or entire disks.
Bootable PC disk
Securely erases IDE and SCSI drives.