This program is designed to write a raw disk image to a removable device or backup a removable device to a raw image file. It is very useful for embedded development, namely Arm development projects (Android, Ubuntu on Arm, etc). Anyone is free to branch and modify this program. Patches are always welcome.

This release is for Windows 7/8.1/10. It will should also work on Windows Server 2008/2012/2016 (although not tested by the developmers). For Windows XP/Vista, please use v0.9 (in the files archive).

Warning: Issues have been reported when using to write to USB Floppy drives (and occasionally other USB devices, although very rare). While this has been fixed in v1.0, it is highly recommended that before an image is written to a device, the user should do a Read to a temporary file first. If this fails, please report the failure along with your system information.

Known issues:
Currently, the program will crash if you are using a Ramdisk. This is being debugged.

Features

  • Raw reading and writing to removable media

Project Samples

Project Activity

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License

GNU General Public License version 2.0 (GPLv2)

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Win32 Disk Imager Web Site

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User Reviews

  • Completely destroyed my 1TB hard drive when I tried to burn an ISO image into a partition. No warning whatsoever. It is now 5GB, and the hard drive is now not accessible. Data in other partitions are all lost and there is no way to recover it. Extremely frustrated. Honestly at this point it is unethical.
  • I have used this to write Raspbian OS images to microSD cards, most recently the image 2023-10-10-raspios-bookworm-arm64-full.img, This is the 64 bit Raspbian Bookworm OS with the recommended software and is 13.4 GB in size. I have never had a problem, always successful writes. The free program SD Formatter can always be used to restore the original format. I have used it both on Windows 10 and Windows 11 computers. "Expand file system" should be done on the Raspberry Pi computer to recover the original microSD card storage capacity.
  • Trash. It turned my 512gb SD card into a 15gb. Took an hour to find a fix. Here is a link to a youtube video for the fix for anyone who has the unpleasentness of using this trashware. youtube.com/watch?v=aPEEpHqq40c
  • Fine tool
  • For those of you having the problem with Win32 re-writing your SD cards as mb instead of gb.. I had this problem too. I found that I could recover them by formatting them in a digital camera. After that, you can format them on your computer and then run them through win32 again.
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Additional Project Details

Awards

Operating Systems

Windows

Intended Audience

Advanced End Users

User Interface

Qt

Programming Language

C++

Related Categories

C++ Storage Software, C++ File Systems, C++ Embedded Systems Software

Registered

2012-10-12