LibDsk suite of command-line tools (available for Linux, MS-DOS, and Microsoft Windows) will convert between different raw disk image formats. dd can be used in Unix to create raw disk image files of disks. QEMU uses IMG files as its default format for hard drive disk images. IrfanView with the plugin "FORMATS" (formats.dll) supports viewing GEM-IMG vector graphics. Garmin MapSource or GPSMapEdit can be used to read Garmin hard-disk image .img format. References Computer file formats Archive formats