Bootcamp can't create bootable usb stick.
After started bootcamp and selected the win8.1 iso file, bootcamp started to copy the files to a empty usb stck.
After waited 10 min at least, there is an error. I have tried several usb stick.
What could be the error here?
USB boot can't be created. There is an error copy windows files.
MacBook Air, OS X Yosemite (10.10)