Win32 Disk Imager is a free tool for Windows to write an IMG file to removable device and backup your removable device to a raw image file.

Making an ISO image of a hard drive means creating a 1-to-1 backup copy that consists of a .iso file. Here are two ways to do just that.

An ISO file is a digital copy of a disk image that has been extracted from physical media. Creating ISOs is a great way to archive physical discs, which are likely to degrade over time.

Disk Jockey is an app that allows you to create disk image files for a variety of retro computers and emulators. Here's how to use it.

Its simplistic interface makes creating bootable USB drives a breeze. Launch Fedora Media Writer, click on 'Custom image', select your ISO file, choose your USB drive, and click 'Write to Disk'.

So I thought I'd use the MS Windows 7 USB/DVD installer tool to make a bootable flash drive of the .IMG file. Unfortunately, the tool only works with ISO's not IMG's. Next I tried Win32 Disk Imager.

Isn't a Vmware/VirtualPC disk image file what you need? Added bonus that the virtualization will have it all mounted and ready.

Alternatively, if you have backed up copies of the files on the disk image, you can create a new disk image and copy the files to it as described in Knowledge Base article #305111. Feedback?

When creating disk images using macOS's included Disk Utility app in /Applications/Utilities you also have the option of password-protecting or encrypting image files.