Insert the DVD or USB flash drive into your Mac.However, if you don’t have a disk image file, create one by following the steps below. The easiest method is to purchase the Windows ISO instead of the DVD version. However, if you are not running El Capitan on a supported Mac, or are still running OS X Yosemite, Boot Camp Assistant requires a disk image file of Windows (not on DVD or a flash drive). Once Boot Camp Assistant completes its tasks, the computer restarts with the normal Windows installation processes. On supported Macs running OS X El Capitan, Boot Camp comes with a modified interface that places the ISO image selector and partitioning on a single screen, allowing a user to easily select an ISO image and partition their hard drive before installing Windows. If you're running a different version of OS X or have an older Mac, you'll need a 16 GB flash drive that doesn't have anything you don't want erased on it (Boot Camp Assistant automatically reformats the flash drive). If you're running OS X El Capitan and have an 11- or 13-inch MacBook Air, a 13- or 15-inch MacBook Pro or the Mac Pro, there's no need for a USB drive. To install Windows 10 (or Windows 7 or 8 for that matter) you will need at least 30 GB of free space on your startup drive and you'll need a keyboard and a mouse or trackpad to use with your computer. You can find out the system specs for your Mac using System Information, accessible by typing 'System Information' into a Spotlight search or using the Apple menu to go to About This Mac -> System Report. Make sure to check the system requirements for the version of Windows you want to install to ensure your Mac meets or exceeds them. Older Mac computers support older versions of Windows, but won't work with Windows 10. You will, of course, need Windows 10, which can be purchased from Microsoft for $119.

This guide assumes you are installing Windows on your computer for the first time. If you've always wanted to try Windows on your Mac and think that now is the time to finally take the plunge, we can help you get through the basics with our how-to guide for installing Windows 10 on your Mac using Apple's Boot Camp Assistant. Following the launch of Windows 10, Apple updated Boot Camp to support the latest Windows operating system on select Mac computers from 2012 and newer.

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