Here is a free and open-source tool to write a raw disk image file to a removable device (say USB or flash drive). The tool is named Win32 Disk Imager.

Over time, numerous small files and directories start cluttering a disk drive. The consequences of this are increased time-to-backup the disk or directory structure.

If VirtualBox failed to register and open virtual hard disk image file as UUID already exists, you can fix the issue by removing the current VDI file.

Although .dmg is a macOS disk format, there are a number reasons of why you'd want open them on Windows computers. Here's how to get started.

Figure C When you attach a VHD from your System Image it will appear in Disk Management with a blue icon and will be assigned a drive letter. Close Disk Management and open File Explorer.

Launch Disk Utility and choose File > New > New Disk Image. In the New Blank Image window that appears name your image—something like My Secret Stuff.

Honestly I was surprised at how difficult that was to upgrade a Win 7 Home system with an IMG file purchased through my University. I don't know what they expect the average populous to do ...