Using Daemon Tools Lite (a 9 MB file that can be downloaded free for domestic use) it is a quick and simple task to extract an ISO disc image and copy it to a USB drive.

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Once you have downloaded and installed Daemon Tools Lite, run the application and browse to the location of your ISO disc image, or browse in
Windows Explorer to the disc image and right click the file to use the context menu to add it to Daemon Tools Lite. Remember to ensure that the size of the image you wish to mount on your USB device is smaller (with a good margin) than the capacity of your USB flash disk.
Next, insert your USB flash drive and select the drive letter assigned to this in the Daemon Tools Lite Mount’n'Drive Manager Settings screen. With everything ready, click on the Mount button to begin copying the ISO image to your handy USB pen drive.
Test if the process has been successful by removing (using the Remove USB Device command in your System Tray) and reinserting your USB drive. If it doesn’t Autoplay, browse to the device in Windows Explorer and double-click the Autoplay icon.