HDD Low Level Format Tool is a freeware utility for low-level hard disk drive formatting. This small program will erase, Low-Level Format and re-certify a SATA, IDE or SCSI hard disk drive. Will work with USB and FIREWIRE external drive enclosures. Low-level formatting of Flash Cards is supported too. Low Level Format Tool will clear partitions, MBR, and every bit of user data

License terms:

Free for personal use (speed is capped at 180 GB per hour which is 50 MB/s)

Just $3.30 for personal use (no speed limit)

$27.00 per seat for commercial or professional use

Updates are free for life