How to Repair DMG Files

by Theon Weber
Jack Hollingsworth/Photodisc/Getty Images

DMG files are Apple disk images--single files that represent the entire contents of a physical disk and can be "mounted" on a computer to provide access to that contents. Just like real disks, they can become corrupted and damaged, and are often difficult to fix. However, Apple's built-in disk utility may help you repair minor damage to a DMG file.

Step 1

Open "Applications," then "Utilities" and double-click on "Disk Utility."

Step 2

Drag the DMG file into the disk utility's left pane.

Select the DMG file you dragged in, click the "First Aid" tab, and click "Repair Disk." Follow the on-screen instructions.


Photo Credits

  • Jack Hollingsworth/Photodisc/Getty Images

About the Author

Theon Weber has been a professional writer and critic since 2006, writing for the Village Voice, the Portland Mercury, and the late Blender Magazine. He was a staff writer at the Web-based Stylus Magazine from 2005 to its closure in 2007.

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