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You need an external USB drive to install Windows on older Mac computers. To find out whether you have a Mac that requires an external USB drive, see the “Learn more” section in the Apple Support article Install Windows 10 on your Mac with Boot Camp Assistant. If your Mac is a newer model that doesn’t require a USB drive, follow the instructions in Install Windows on your newer Mac using Boot Camp instead.
The keyboard and mouse or trackpad that came with your Mac. (If they aren’t available, use a USB keyboard and mouse.)
A blank 16 GB or larger external USB 2 flash drive, formatted as MS-DOS (FAT).
To format an external USB drive as MS-DOS (FAT), use Disk Utility, located in /Applications/Utilities. In Disk Utility, choose View > All Devices, select the USB drive in the sidebar, then click Erase in the toolbar. In the dialog, enter a name for the drive, choose MS-DOS (FAT) from the Format pop-up menu, choose Master Boot Record from the Scheme pop-up menu, then click Erase.
A full-installation, 64-bit version of Windows 10 on a disk image (ISO file) or other installation media.
You can download a Windows 10 Disc Image (ISO File) from Microsoft.
Sufficient free storage space on your startup drive. For information about the amount of free space needed, see the Apple Support Article Install Windows 10 on your Mac with Boot Camp Assistant.
Before you install Windows, make sure you back up important files.
You can use Time Machine or any other method to back up your files. For information about backing up files, see Back up your files with Time Machine and Ways to back up or protect your files.
Do the following steps in order.
Before you install Windows, install all macOS updates.
On your Mac, log in as an administrator, quit all open apps, then log out any other users.
Choose Apple menu > System Preferences, click Software Update, then install all available updates.
If your Mac restarts after installing an update, open Software Update again to install any additional updates.
Boot Camp Assistant prepares your Mac by creating a new partition for Windows named BOOTCAMP and downloading the Boot Camp support software.
Important: If you’re using a portable Mac, connect it to a power source before continuing.
Connect an external USB drive or insert a flash drive into the USB port on your Mac; keep it connected or inserted while you install Windows and the Windows support software.
On your Mac, open Boot Camp Assistant , located in /Applications/Utilities.
At the introduction screen, click Continue.
The system is checked for total available disk space. Older Time Machine snapshots and cached iCloud files are removed to make space for Boot Camp. This process may take a long time to complete (you can click the Stop button to skip this process).
At the Select Tasks step, select all the tasks, then click Continue.
At the Create Bootable USB Drive for Windows Installation step, choose the Windows ISO image and the USB drive, then click Continue.
The Windows files are copied to the USB drive. This process may take a long time to complete (you can click the Stop button to interrupt this process).
At the Create a Partition for Windows step, specify a partition size by dragging the divider between the macOS and Windows partitions. If you have multiple internal hard drives, you can select a different hard drive from the one running macOS and create a single partition on that drive to use solely for Windows.
Click Install.
When this step is complete, the Windows installer starts.
In the Windows installer, follow the onscreen instructions.
When you’re asked where to install Windows, select the BOOTCAMP partition (you may need to scroll through the list of partitions to see it), then click Next.
WARNING: Do not create or delete a partition, or select any other partition. Doing so may delete the entire contents of your macOS partition.
Continue following the onscreen instructions to finish installing Windows.
After you install the Windows software, your Mac automatically restarts using Windows.
Follow the onscreen instructions to set up Windows.
After installing Windows, Boot Camp drivers that support your Mac hardware start installing.
Note: If the support software doesn’t install automatically, you need to install it manually. For instructions, see the Apple Support article If the Boot Camp installer doesn't open after using Boot Camp Assistant.
In the Boot Camp installer in Windows, follow the onscreen instructions.
Important: Do not click the Cancel button in any of the installer dialogs.
If a message appears that says the software you’re installing has not passed Windows Logo testing, click Continue Anyway.
You don’t need to respond to installer dialogs that appear only briefly during installation, but if a dialog asks you to install device software, click Install.
If nothing appears to be happening, there may be a hidden window that you must respond to. Look behind open windows.
When the installation is complete, click Finish, then click Yes to restart your Mac.
After your Mac restarts, follow the instructions for any other installers that appear.
Mac vs Windows. Windows vs Mac. Why choose if you can get the best of both worlds by dual booting? Install Windows on Mac so you can jump back and forth from one operating system to another on the same computer.
By now, the practice is well-established and Windows can work on Mac well. In this article, we’ll have a deep look at installing Windows on Mac. Don’t worry, we’ll have your back the whole way through!
If you want to install Windows on your Mac, you have two options. You can either use Mac Boot Camp, a native feature of the macOS operating system, or you can use a third party virtualization program. Both methods have their own pros and cons, so let’s dive in.
Boot Camp is built into the operating system of all Macs. If you go to your Applications > Utilities folder, you’ll see the Boot Camp Assistant app. It makes the separate partition on your hard drive for installing and running Windows. Once Windows is installed in Boot Camp, every time you turn on your Mac, you will be asked to choose the operating system you want to run. This means that in order to switch from macOS to Windows, you need to reboot your computer.
Advantages
Disadvantages
Virtualization programs are third-party applications that allow to install a separate operating system on one machine. They run like any other app on your Mac, so you can see the entire Windows desktop within a window on your computer.
Among the most popular virtualization programs are VirtualBox, Parallels, and VMware. Each one has its peculiarities, but we’ll try to sum up what they have in common.
Advantages
Disadvantages
Depending on your specific needs, you can choose the option that works best for you. But we suggest using Boot Camp. It’s a free native feature of your operating system, running directly on your hardware. Therefore, it will be faster than any other method. And below, you’ll find all information on how to run Boot Camp on your Mac.
Some versions of Windows require a certain processor and more hard drive space than the others. Therefore, you have to check the documentation that came with your copy of Windows to learn what you need.
You also need to make sure that your Mac is compatible with the version of Windows you want to install. For instance, Windows 10 is supported on these models:
You need to have at least 55 GB of free disk space on your startup drive for installing Windows on a Mac. And if you don’t feel like spending the next several hours cleaning your Mac manually, you can use a powerful utility CleanMyMac X to find and remove all the junk from your startup disk.
CleanMyMac has everything to finish the 3-hour task of cleaning your hard drive in less than 5 minutes. It will scan every inch of your system and remove gigabytes of junk in two clicks. By the way, CleanMyMac finds about 75 GB of junk on average — more than enough for a smooth Windows installation.
Here’s how to clean your Mac with CleanMyMac X:
That’s it! Gigabytes of junk are gone from your computer forever.
Finally, you should also perform a backup of your Mac in case something goes wrong. Although, it happens very rarely, it’s always better to back up your important data. There are a few methods of backing up your Mac, so choose the most convenient one for you.
You can make automatic backups with Time Machine — software that comes with your Mac. It backs up all data, so you can recover individual files or your entire system from your backups. You may also store files in iCloud and access them whenever you need. iCloud comes with 5 GB of free storage but you can upgrade it any time. If you have an external storage device, you can copy some files and folders on it.
We do recommend you to back up your Mac before installing Windows as it minimizes the chance of losing important data.
Here’s how to install Boot Camp. The installation can be a little time consuming, but it is by no means difficult. Check out the details below.
First of all, you need to get the Windows disk image (ISO file) from the Microsoft website. Here’s how to download it:
The ISO file now will be downloaded to your Mac.
Boot Camp Assistant guides you through installing Windows on your Mac. You just have to follow the onscreen instructions. To launch the Boot Camp Assistant, go to Applications > Utilities folder. Click continue and Boot Camp for Mac will automatically locate the ISO file on your system.
When you are done with the Assistant, your Mac restarts to the Windows installer. When you are asked where you want to install Windows, choose the BOOTCAMP partition and click Format.
*Note that this step is only required if you’re using a flash drive or optical drive to install Windows. In other cases, the right partition will be selected and formatted for you automatically.
To finish the installation, you have to follow the onscreen instructions. Take a long breath — the next 12 steps may seem like climbing Everest, but it’s much easier than you think. Here’s how to install Windows on a Mac:
Windows will boot fully so you can use it normally.
On the Welcome to Boot Camp Installer box, click Next and accept the terms in the license agreement. Then click Install to proceed. When the installer completes, click Finish to reboot your machine.
By default, your Mac will still boot to macOS. To access Windows, you have to turn your Mac off and then turn it on while holding the Option (Alt) key. You will be asked from which drive you’d like to boot.
Note that while in Windows, the Mac’s Command key functions as the Windows key, while the Option key functions as the Alt key. If you have a Touch Bar, you’ll see a complete set of buttons, similar to the Control Strip in macOS.
If for some reasons you don’t need Windows anymore, you can permanently remove it from your Mac. Follow these steps:
The Boot Camp Assistant will automatically remove Windows from your Mac.
Warning: All data, including software and files, stored on the Windows partition will be deleted, so make the backup copies first.
That may seem like a lot of steps, but it doesn’t take all that long to install Windows on a Mac. Now you can enjoy two operating systems and switch between them right when you need. Cheers!