How-to: Convert .dmg files to .iso

So I primarily run a Mac for most of my day to day activites. There are times though when I need to use Virtual Box to load a Windows 7 instance. I like to use ISO’s to install my VM’s as you don’t need to keep a CD-ROM available.

However when you image a CD-ROM in OSX, you get a dmg file. Not may other platforms know quite what to do with a .dmg image so I needed to convert it to ISO. This is how I did it.

hdiutil convert /path/to/filename.dmg -format UDTO -o /path/to/savefile.iso

Change the “path/to/filename to the appropriate path for both your input and output files.


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