Therefore, it is necessary for you to delete unused DMG files in time. Besides, DMG files will take up disk space and may even decrease the running speed of your Mac. After you install an application, its DMG file is useless. Mac systems treat DMG in the same way they would treat a disc that was interleaved, and they instantaneously try to open or “track ” the file.Summary: In the article, you'll learn what a DMG file is and how to delete dmg files after installation manually and automatically.ĭMG files are to Mac what ISO files are to Windows. The file comprises raw data that is generally both encrypted and compressed. The DMG file is fundamentally a mountable disc image that displays on your desktop when it is opened.

Mostly the DMG file is used to give the Mac devices the capability to install different types of files and software that initiate from the internet. The DMG file extension was developed by Apple and is mostly used on Macintosh computers. The DMG file extension is also used by the Oracle Export and Ingress tool for scrapheap files kept in the binary format of the Oracle database. DMG files are generated for Mac users and are not supported by Windows OS but users can access the DMG content in the Windows Operating system by using compression and decompression tools like 7-Zip, Pea Zip, etc. The old version of IMG files used in Mac OS Classic is substituted by the DMG file format. It’s very convenient to mount DMG files into a virtual drive or can use Apple Disk Utility software to open and view the content of DMG file format. DMG file format is the most widely used disk image file intended to allocate applications and files among the Apple PCs.

dmg extension is an Apple Disk Image file and known as a Mac OS X Disk Image file.

Mac disk image file