Generally, the command hdiutil can be used this way: This file can be safely renamed to image.iso, copied to a Windows server or machine, and burned with your CD/DVD burner of choice. This will actually create a file called in the current directory (even though we asked for the output to be image.iso). Hdiutil convert apple.dmg -format UDTO -o apple.isoģ. Assuming that you have a disk image called apple.dmg in the current directory, type Open a terminal window from Finder > Applications > Utilities > Terminal.Ģ. How To Convert DMG Files To ISO Files On Mac Method 1: Using the Mac terminalġ. This is just a 150KB dmg file and will be handy if you want to have something to test with while you’re following this tutorial. I found one on Apple’s article about The XMLHttpRequest Object website while I was learning Ajax and that can be downloaded from this link. Before we start, let’s download a dmg file from the public domain.