| Apple Mac OS X Disk Image Format | |
| Apple | |
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The .DMG file extension refers to the files of the type, Apple disk images. The Apple disk image files are common on the MAC operating systems and are used on Apple manufactured computers. These files are used as virtual drives.
Upon the execution, the image files are mounted to the disk and appear as if they are a drive on the computer. There are several options to create these images from apple’s variety of choices for disk image formats. The file structure allows for data compression and is also secure as it comes with password encryption to ensure the privacy of the user’s data.
Windows
Linux
DMG is a disk image format usd by Mac OS X operating system. DMG file stores raw block data of a physical disk, usually compressed for easier file management.
Creating DMG files
DMG file on Mac system can be created in one of the following three ways:
- Using Disk Copy feature.
- Burning a CD.
- Mount as a normal volume.
DMG file encryption
DMG files, beside compression, offer a encryption feature which requires a password for some DMG files in order to access them. DMG files structure is compatible with both Universal Disk Image Format (UDIF) and New Disk Image Format (NDIF) standards.
DMG format applications
DMG files are commonly used for storing software installers in compressed form and dsitributing them over the internet. DMG files are frequently encountered when downloading Mac OS software form the Web.
Additional information
DMG image file is he successor to IMG format used by Mac OS Classic operating system.
DMG format is sometimes referred to as Apple Disk Image or Mac OS X Disk Image.
