You can split ISO files into smaller parts for easier distribution over the Internet and through email. You can't open split ISO files when they're in parts; you need to join them together again before you can open them. On a Mac, you can use the Terminal application to join together ISO parts into one file.

  1. Save the .bin files to a folder on your desktop
  2. Click the "Applications" folder in your dock, and click "Utilities" and "Terminal."
  3. In the Terminal window, replace *username* with yours and *folder name* with the name of the folder you saved the .bin files to and type;  
cd /Users/*username*/desktop/*folder name*

 

  1. After hitting return, enter "cat" in the terminal window and then press the space bar.
  2. Drag each of the ISO files into the terminal window. You'll see that the path to each of the files appears in the window.
  3. Type "> title.iso" in the Terminal window, replacing "title" with the name you want to give the joined ISO file, and press "Return." The separate files are joined into one file, which is saved to your desktop.