I'm looking for a new solution in order to make a Windows bootable USB on OS 10.9 from an older mac that "technically" does not support creating a Windows USB. For 10.6 thru 10.8 I was able to go into the package contents of the BootCamp Utility and modify the Info.plist to allow an older Mac to show the "Create a Windows USB" option. However, with OSX Mavericks I am unable to make any change to the Info.plist without getting a nasty error message each time I launch. It seems that Apple has digitally signed the application this time and that is what is causing the issues. I tried googling all over and could not find a single solution. Any tips, tricks, or help would be greatly appreciated. Thank you.