DD for Windows

DD for Windows is a port of the classic Unix dd utility for Windows systems. It allows you to copy and convert raw data to and from block devices like USB drives, hard disks, or disk images using the command line.

Typical uses include:

  • Writing ISO/IMG files directly to disks
  • Creating disk backups or clones
  • Wiping disks with zeroed or random data
  • Low-level data recovery and forensics

Warning: dd writes raw data directly to devices. Double-check the target disk before running to avoid data loss.

DD for Windows is distributed under the GNU General Public License (GPL). It is a lightweight tool with no GUI, intended for advanced users familiar with command-line interfaces.

Download Options

Version Platform Type Download
0.5 Windows Portable (.zip) Download
0.6 beta 3 Windows Portable (.zip) Download

Example Commands

# Write ISO image to USB drive
dd if=C:\path\to\image.iso of=\\.\PhysicalDrive1 bs=1M

# Create a full disk backup
dd if=\\.\PhysicalDrive0 of=C:\disk_backup.img bs=4M

# Wipe a disk with zeros
dd if=\\.\zero of=\\.\PhysicalDrive2 bs=1M

⚠ Replace PhysicalDriveX with the correct device number. You can list available devices with dd --list.

FAQ

Is DD for Windows safe?
Yes, if used carefully. Always double-check the target disk before running commands, as dd overwrites data without warning.

Can I create bootable USB drives with DD?
Yes. By writing an ISO or IMG file directly to a USB device, you can make it bootable.

Is DD an alternative to Rufus?
In a way, yes. DD is a low-level alternative for advanced users who prefer the command line. However, Rufus, Ventoy, and Balena Etcher are safer and easier for most people because they have graphical interfaces.

Why is DD sometimes flagged as a backdoor?
Some antivirus tools or users mistakenly label DD as a backdoor because it directly accesses disks at a low level. In reality, DD for Windows is open source, licensed under GPL, and safe to use. Its “dangerous” reputation comes from its power: it can erase or clone drives without asking.

Useful Links