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SPECIFICTION
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CBL Data Shredder

cbldatarecovery.com

Free plan Windows
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Spec score 7.6 #9 of 17 in Data Erasure Software

What it is

CBL Data Shredder is a free utility for erasing hard-drive contents so existing and future software-based recovery tools cannot retrieve them. It overwrites the entire disk with bit patterns, with methods using different numbers of passes. Users can choose a pattern and pass count; the default is one pass of “00”. The program implements a described US Department of Defense 5220.22-M method using three passes with different patterns, and also lists VSITR, Bruce Schneier, Peter Gutmann, and Royal Canadian Mounted Police DSX methods. Its Peter Gutmann implementation makes 35 passes. The Windows version functions exclusively on Windows XP, Vista, 7, 8, and 10. DOS packages are available as a floppy disk maker, a bootable CD-ROM ISO, and a USB flash drive creator; the USB creator requires Windows 7 or later. The free download requires submitting a name and email address, and downloading means agreeing to the licensing conditions. The product warns that modern-drive features may leave some areas inaccessible to the software and vulnerable to hardware-based recovery. Its DSX method alone is not approved for sanitizing classified information, and current standards require physical destruction afterward.

Spec sheet

Purpose
CBL Data Shredder is intended to erase hard-drive contents so existing and future software-based recovery tools cannot retrieve them.Read 8 Oct 2026 · cbldatarecovery.com
License
Downloading the software constitutes agreement to the CBL Data Shredder licensing conditions.Read 8 Oct 2026 · cbldatarecovery.com
Custom erase method
Users can choose a bit pattern and number of passes; the default is one pass of the pattern “00”.Read 8 Oct 2026 · cbldatarecovery.com
DoD method
The program implements the described US Department of Defense 5220.22-M method using three passes with a different bit pattern on each pass.Read 8 Oct 2026 · cbldatarecovery.com
DOS packages
DOS packages are available as a floppy disk maker, a burnable CD-ROM ISO, and a USB flash drive creator.Read 8 Oct 2026 · cbldatarecovery.com
Download process
The download page asks users to submit their name and email address to get the free download.Read 8 Oct 2026 · cbldatarecovery.com
Drive limitation
The product page warns that modern-drive features may leave some disk areas inaccessible to the software and vulnerable to hardware-based recovery.Read 8 Oct 2026 · cbldatarecovery.com
DSX caveat
The page says DSX alone is not approved by the Canadian government for sanitizing classified information and that current standards require physical destruction afterward.Read 8 Oct 2026 · cbldatarecovery.com
Gutmann pass count
The Peter Gutmann method implemented by the program makes 35 overwrite passes.Read 8 Oct 2026 · cbldatarecovery.com
How it works
The program overwrites the entire disk with bit patterns, and supports methods with different numbers of passes.Read 8 Oct 2026 · cbldatarecovery.com
Other erase methods
The program also describes VSITR, Bruce Schneier, Peter Gutmann, and Royal Canadian Mounted Police DSX erase methods.Read 8 Oct 2026 · cbldatarecovery.com
USB creator requirement
The USB creator requires Windows 7 or later.Read 8 Oct 2026 · cbldatarecovery.com
Windows compatibility
The download page says the Windows version functions exclusively on Windows XP, Vista, 7, 8, and 10.Read 8 Oct 2026 · cbldatarecovery.com

Plans and prices

Free Free Complete low-level hard-drive formatting · Customizable wipe methods · Government-level wiping of drive sectors Read 20 Sep 2026 · cbldatarecovery.com
Freeware Free Free download Windows XP/Vista/7/8/10; DOS packages include floppy disk maker, bootable CD-ROM ISO, and USB creator; USB creator requires Windows 7 or later Read 8 Oct 2026 · cbldatarecovery.com

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Strong points and limits

Strong points

  • Users can customize the overwrite pattern and pass count.
  • Includes multiple named erase methods.
  • DOS packages include floppy, CD-ROM, and USB options.

Limits

  • Windows version supports only XP through 10.
  • Modern-drive areas may remain vulnerable to hardware recovery.
  • Free download requires a name and email address.
  • DSX alone is not approved for classified information.

Who it suits

CBL Data Shredder may suit users who need to overwrite a drive and have a supported Windows version or a DOS bootable package. Its stated limits matter for modern drives and classified-data sanitization.

Verdict

CBL Data Shredder offers configurable disk overwriting and several named methods, but its Windows support is limited to XP through 10. Consider the stated drive-area and DSX caveats when deciding whether it fits your erasure needs.

Where Specifiction places it

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