Q:

What is a .dmg file?

A:

Quick Answer

Files with the extension .dmg are Macintosh Operating System disk images, which means they are a copy of the contents in a storage device. These types of files can be opened on a Mac computer and are often used to install new applications or software.

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Full Answer

Files that end in .dmg will contain information from an entire storage device, such as an external hard drive or flash drive. When a .dmg file is opened, the Mac computer will act as if a storage device is attached. Files with a .dmg extension typically contain packages to install software, but can also contain normal files similar to a .zip file.

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