6. Erase/Wipe Parameters and Application Settings

Whether you choose to erase data from the drive or to wipe data from unoccupied drive space, the methods of overwriting over these spaces are the same.

6.1 Erase/Wipe Methods

1 - One Pass Zeros or One Pass Random

When using One Pass Zeros or One Pass Random, the number of passes is fixed and cannot be changed. When the write head passes through a sector, it writes only zeros or a series of random characters.

2 - User Defined

You indicate the number of times the write head passes over each sector. Each overwriting pass is performed with a buffer containing the pattern you specified (ASCII string).

3 - US DoD 5220.22-M

The write head passes over each sector three times. The first time is with zeros (0x00), the second time with 0xFF and the third time with random characters. There is one final pass to verify random characters by reading.

4 - US DoD 5220.22-M (ECE)

The write head passes over each sector seven times (0x00, 0xFF, Random, 0x96, 0x00, 0xFF, Random). There is one final pass to verify random characters by reading.

5 - Canadian OPS-II

The write head passes over each sector seven times (0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, Random). There is one final pass to verify random characters by reading.

6 - German VSITR

The write head passes over each sector seven times . (0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0xAA). There is one final pass to verify random characters by reading.

7 - Russian GOST p50739-95

The write head passes over each sector two times. (0x00, Random). There is one final pass to verify random characters by reading.

8 - US Army AR380-19

The write head passes over each sector three times. The first time with 0xFF, second time with zeros (0x00) and the third time with random characters. There is one final pass to verify random characters by reading.

9 - US Air Force 5020

The write head passes over each sector three times. The first time with random characters, second time with zeros (0x00) and the third time with 0xFF. There is one final pass to verify random characters by reading.

10 - HMG IS5 (Baseline and Enhanced)

Baseline method overwrites disk's surface with just zeros (0x00).

Enhanced method - the write head passes over each sector three times. The first time with zeros (0x00), second time with 0xFF and the third time with random characters.

There is one final pass to verify random characters by reading.

11 - Navso P-5329-26 (RL and MFM)

RL method - the write head passes over each sector three times (0x01, 0x27FFFFFF, Random).

MFM method - the write head passes over each sector three times (0x01, 0x7FFFFFFF, Random).

There is one final pass to verify random characters by reading.

12 - NCSC-TG-025

The write head passes over each sector three times (0x00, 0xFF, Random). There is one final pass to verify random characters by reading.

13 - NSA 130-2

The write head passes over each sector two times (Random, Random). There is one final pass to verify random characters by reading.

14 - Bruce Schneier

The write head passes over each sector seven times (0xFF, 0x00, Random, Random, Random, Random, Random). There is one final pass to verify random characters by reading.

15 - Gutmann

The write head passes over each sector 35 times. For details about this, the most secure data clearing standard, you can read the original article at the link below: www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html

Before < Wipe Parameters > Next

Open Contents

  1. Product Overview
    1. Erasing Confidential Data
      1. Advanced Data Recovery Systems
      2. International Standards in Data Removal
    2. Wiping Confidential Data from Unoccupied Drive Space
      1. Wiping NTFS
      2. Wipe FAT
      3. Wipe HFS+
      4. Wiping Ext2fs/Ext3fs/Ext4fs
  2. System Requirements for DOS and Windows versions
    1. Personal Computer
    2. Drive Storage System
    3. Other Requirements
    4. Active@ KillDisk for Hard Drives Version
  3. Running Active@ KillDisk for DOS
    1. Preparing a DOS-Bootable floppy,USB
      1. System Formatting
      2. Copying Active@ KillDisk to a floppy, USB
      3. One-Step Method
    2. Preparing a Bootable CD
    3. Modes of Operation
      1. Interactive Mode
        1. Erase Data from a Device
        2. Wiping the Data
      2. DOS Command Line Mode
      3. Autoexecute Mode
    4. Erasing or Wiping Logical Drives (Partitions)
    5. Erase Operation Complete
  4. Running Active@ KillDisk for Windows
    1. Active@ Boot Disk Creator
    2. Modes of Operation
    3. Command Line Mode
    4. Erasing or Wiping Logical Drives (Partitions)
    5. Erase Data from a Logical Drive
    6. Wipe Data from a Logical Drive
    7. Erase or Wipe Operation Complete
  5. Common Questions
    1. How does the licensing work?
    2. How is the data erased?
    3. What is the difference between the Site and Enterprise license?
    4. Which operating systems are supported by Active@ KillDisk?
    5. Is Active@ KillDisk compatible with Macintosh computers?
    6. What to do if I cannot boot from a floppy (USB)?
    7. Will I be able to use my Hard Disk Drive after Active@ KillDisk erase operation?
  6. Descriptions of Erase/Wipe Parameters
    1. Erase/Wipe Methods
      1. One Pass Zeros or One Pass Random
      2. User Defined
      3. US DoD 5220.22-M
      4. US DoD 5220.22-M (ECE)
      5. German VSITR
      6. Russian GOST p50739-95
      7. Canadian OPS-II
      8. HMG IS5 Baseline
      9. HMG IS5 Enhanced
      10. US Army AR380-19
      11. US Air Force 5020
      12. Navso P-5329-26 RL
      13. Navso P-5329-26 MFM
      14. NCSC-TG-025
      15. Bruce Schneier
      16. Gutmann
    2. Other Parameters
      1. Verification
      2. Retry Attempts
      3. Ignore Errors
      4. Clear Log File before Start
      5. Skip Confirmation
      6. Wipe out Deleted/Unused data
    3. Glossary of Terms
 

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