The DMG file type is primarily associated with 'Macintosh OS X' by Apple Inc.. On the Macintosh, these files are treated like a real disk. They can be created with Disk Copy, burnt to CD or mounted as a normal volume. On a Windows PC the dmg2img program will convert a .DMG file to a standard (hfsplus) image disk file. On Windows, a fairly complete filesystem driver for HFS+ exists as a commercial software package called MacDrive.

Note: You have to run the dmg2img program at a command prompt. DMGs can be password-protected and, if so, may not be mountable by some software. The DMG file also comes in different formats: HFS, HFS+, UFS, ProDOS, Linux, and Fat32 and so may also require special mounting software to account for the format. IsoBuster can interpret these files directly as can other programs such as UltraISO. The program TransMac, by Acute Systems, can both open and create DMG files on a PC.

List of compatible programs: