And if you selected the Download Apple Support Software option in Step 5, you will see the message 'Install this Windows Support Software after Windows is installed'. Step 7: After Boot Camp Assistant completes its task, you will see the message 'The selected drive has been formatted and the Windows installation image has been copied'.

So, if you have this option selected, make sure your Mac is connected to the web. If you selected the Download the latest version of Windows support software from Apple option, Boot Camp Assistant will also download the necessary drivers from Apple's servers. Select the ISO image file and click Keep it up to continue.Ĭlick Keep it up again when the 'The drive will be erased' warning appears to begin formatting the drive and then copying the Windows files. Step 6: On the next screen, click Choose to switch to the Windows 8.1 ISO image file. Since the support software is designed specifically for each Mac, it may not work properly if you try to run the downloaded support software on a different Mac than the model you are using to prepare the bootable USB.Īnd if you plan to install Windows 8.1 on this Mac, keep the option selected to automatically download all support software to USB so you can easily install all drivers after installing Windows 8.1 on your Mac. NOTE: As mentioned above, keep Download Latest Windows Support Software from Apple selected if you intend to use this bootable USB on the Mac (this Mac) and not a PC. Make sure the option is titled Create a Windows 7 or later installation disc is selected before clicking Keep it up button. Step 5: Uncheck the option titled Install Windows 7 or later (we use this option when we install Windows on Mac using Boot Camp) and also uncheck Download latest version of Windows Support Software from Apple if you are preparing this Windows 8.1 bootable drive for install Windows 8.1 on a PC.

Step 4: Once Boot Camp Assistant starts, click Keep it up button. To do this, click Trampoline Click on the icon Otherand then click bootcamp assistant to open the Boot Camp Assistant software. Step 3: Launch the Boot Camp Assistant software. And if your PC is unbootable, you can follow our guide on how to backup data from unbootable PC (the easiest way) to copy the ISO file to the USB drive first and then copy the same to your Mac. If you don't have ISO on Mac, you can follow our guide on how to transfer files between Windows and Mac to quickly transfer ISO files. If you already have a copy of the ISO file on your Mac, you can safely skip this step.

Step 2: Then transfer the Windows 8.1 ISO file to your Mac. Step 1: Connect the USB flash drive to your Mac and back up your files as all data will be formatted during the process.

Follow the steps below to create a bootable Windows 8.1 USB stick on Mac:

Create bootable usb windows 7 for mac