What this download is for
It is designed for deliberate data removal, not for repairing a slow disk or creating a backup. Identify the correct device and inspect its contents before choosing an erase operation.
Compatibility and things to check
Erasing can permanently destroy files. Back up anything you need and disconnect unrelated drives when practical. Software overwriting has limitations on SSDs and flash storage; consult the device manufacturer's supported erase method when that distinction matters.