.dmg

File Type Mac OS X Disk Image IconMac OS X Disk Image
File Format Proprietary (Apple)
Usage Referenced by an application; not meant to be opened manually; may run a program or script when opened
Rank ★ ★ ★  Common
Description

DMG is the standard disk image format used by Mac OS X. It supports both file compression and encryption. When opened, a DMG file will mount a virtual disk on the desktop. Because the DMG format is natively supported by Mac OS X, Macintosh software installers are often distributed as DMG files over the Internet.

Important: Since the DMG format is designed for Mac OS X, DMG files are not meant to be opened or mounted on Windows systems. However, some Windows programs can extract the contents of a DMG file.

Info About Apple Disk Utility

Disk Utility is a utility bundled with Mac OS X. It is used to mount, unmount, erase and initialize disks. The program can also create and open disk image files. The "Restore" feature supports full disk restores from either a disk image or a physical disk.

Open With
Windows

Icon7-Zip

IconPeaZip

IconCatacombae HFSExplorer

macOS

IconApple Disk Utility

IconRoxio Toast

IconIncredible Bee Archiver

Unix

IconCatacombae HFSExplorer

Updated December 9, 2011
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