To securely erase we need to follow certain patterns or standards for disk sanitization and Disk Doctors Data Sanitizer a Data Eraser Utility is designed to do the same job and supports 9 sanitization standards which includes Fast Zero Overwrite, Random Overwrite, US Navy, NAVSO P-5239-26 – RLL, US Department of Defense (DoD 5220.22-M), DOD Standard 5220.28 STD, North Atlantic Treaty Organization - NATO standard, Peter Gutmann Secure Deletion, German:VSITR and US Department of Defense (DoD 5220.22-M) + Gutmann Method to effectively remove magnetic remnants from the hard drive.. Data Eraser eliminates data file(s) in different directories with a stroke of a key shredding sensitive data beyond recovery.Disk Doctors Data Sanitizer is an advanced disk erasing tool (for Windows), which allows you to completely remove sensitive data from your hard drive or logical drives by overwriting it several times with carefully selected pattern and various international disk sanitization standards. Works with Windows 2000, XP and DOS