Mount a disc image (ISO/MDF) in Mac OSX

We’ve all been in the scenario when downloading a disc image we must first go through the hassle of burning it onto an optical disc (CD/DVD) before we are able to use it. Currently in Windows we are able to download a third party application that we can then ‘mount’ the disc image with and access it’s contents without burning.

No surprise, this is also possible in OSX, you may do it at the moment with Roxio Toast or something similar. Not many people know, but Apple already give us this functionality as part of the base system (Disk Utility) and therefore we do not require a third party application.

Steps to do this are covered below. Firstly, bear in mind that MDF files are Alcohol 120% files – however the file itself is no different from an ISO file and you can simply change the file extension from *.mdf to *.iso for it to work.

  1. Launch Disk Utility from Spotlight or open finder and launch from Applications>Utilities.
  2. From the ‘File‘ menu, select ‘Open Disk Image‘.
  3. Select your ISO file.
  4. Access from the desktop, as it would be if a physical disc.
  5. Job done.  Eject the disc as normal to unmount.

No video guide is provided for this, if you would like one please let me know.

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