Step 1: Connect your USB flash drive to Mac and back up your files as all data will be formatted during the process. Follow the instructions below to create a bootable USB-USB-USB-8 on a Mac: If you’re using a newer version of Mac OS X, preparing Windows 8.1 USB is relatively easy and can be done without installing additional software on your Mac. The only thing is that you need to have a Windows 8.1 ISO image file to prepare the bootable Windows 8.1 USB on your Mac.
How to Create a Windows 8.1 Bootable USB on Mac How to Create a Windows 8.1 Bootable USB on Mac Or maybe your PC is not bootable and you want to prepare a bootable USB with the ISO file that you have on your external hard drive. or you simply want to create the bootable Windows 8.1 USB without installing new tools. There are several reasons why you might want to create a Windows 8.1 bootable USB flash drive on your Mac. Maybe you decided to install Windows 8.1 on Mac without Boot Camp.