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Now restart Boot Camp Assistant, and you’ll find the option you were looking for. Then it’s as easy as sudo codesign -fs - /Applications/Utilities/Boot\ Camp\ Assistant.app For this, we’ll need the Xcode command line tools installed. Then, we’ll need to resign Boot Camp Assistant, otherwise it will refuse to run. Look for the key PreUSBBootSupportedModels. Once we’re in ist, we’ll tell it which machines can create USB disks. Instead, copy Boot Camp Assistant.app to your desktop, and follow the instructions using the copy.

Note: If you are running OS X 10.11 or newer, you will be unable to edit ist. (Note: this requires elevated privileges). It’s at /Applications/Utilities/Boot Camp Assistant.app/Contents/ist. Don’t Panic! Hacking Boot Camp Assistant into small bits and reassembling it will do the trick.įirst of all, we’ll modify Boot Camp Assistant’s ist. If you’re on an older machine (like my Hoth), you won’t find this option. Click that and point it to your ISO image. If you’re on a newer machine without an optical drive, you probably have an option that says “Create a Windows 7 or later version install disk”. Here is the page which helped me to enable this optionĬreate a Windows Install USB on OS X Yosemite.Ĭreating a Windows installer from OS X is actually quite simple - Boot Camp Assistant can do it for you.

Add your System's model identifier(Find it by System Information app) into USBSupportedModels section.Edit section's title: PreUSBBootSupportedModels to USBSupportedModels (if it's already USBBootSupportedModels -> skip.Open Package content of Boot Camp Assistant app, backup ist file somewhere, then open the old one with XCode.

Still, if you want to create an installer on an external disk regardless, all you have to do is edit Boot Camp Assistant's "ist" file: For instance, older Macs can not boot from external USB disks, therefore creating an installer onto a USB disk would make no sense. The "Create a Windows 7 install disk" option is hidden because your system's capabilities are limited. I followed this tutor here and got success.