I am in need of creating a Windows 8.1 Pro USB bootable. I've tried googling for solutions and all returned Winusb. Upon installing winusb, these errors shows up on the CLI input sudo apt-get update:
W: Failed to fetch http://ppa.launchpad.net/colingille/freshlight/ubuntu/dists/trusty/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/colingille/freshlight/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found
Thus, when I enter this CLI input sudo apt-get install winusb, this message is shown E: Unable to locate package winusb.
I was wondering is there another way to install/create a Windows8.1 USB Bootable using Ubuntu 14.04 LTS with the source of the Windows installer is coming from an .iso file.