

After making your selection, click Continue. Select the device you wish to have the Windows support files installed on this should be the USB flash drive you prepared earlier.In the Select Tasks window, remove checkmarks from “Create a Windows 7 or later version install disk” and “Install Windows 7 or later version.” Ensure the checkbox labeled “Download the latest Windows support software from Apple” is checked, and then click Continue.

In the Boot Camp Assistant window that opens, click the Continue button.Launch Boot Camp Assistant, located at /Applications/Utilities.The external drive that you’ll install Windows on needs to be prepared by erasing and formatting the drive for use with Windows. Prepare the External Drive for Installing Windows If you’re not using a portable Mac with a built-in keyboard and trackpad, you’ll need a wired keyboard and mouse to complete the installation. During the Windows installation, the drivers for Apple wireless keyboards and mice aren’t installed until the very end of the process. A licensed copy of Windows 10 ISO or an install DVD.VirtualBox virtualization app (available for free).We’re using a USB 3.0 drive, but a Thunderbolt drive should work as well. What You Need to Install Boot Camp on an External Drive Also, make sure you have a current backup before beginning. Be sure to read through the process before undertaking it.

This is an advanced process with quite a few pitfalls that can trip you up. It allows you to install Windows on an external drive without first having Windows installed on a PC or in a virtual environment. But the method we’re going to outline here is a bit different. They range from creating clones of an existing PC installation or using Microsoft IT tools for installing Windows. There are actually a few ways you can successfully install Windows on an external drive.
