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.
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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!
Boot Camp for Mac vs virtualization software
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
- built into your operating system
- easy to use — Boot Camp Assistant guides you through the installation process
- puts less strain on your Mac’s memory and processing power
- completely free (not Windows of course)
- easy to update
Disadvantages
- you need to reboot your computer to switch between the systems
- transferring data between operating systems isn’t easy
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
- you can run both operating systems at the same time
- easy file integration between systems
Disadvantages
- you need at least 8 GB of RAM for Mac to run smoothly
- virtualization apps are not cheap
- updates are not free
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.
How to use Boot Camp: Preparing your Mac
1. Check the system requirements
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:
- MacBook (2015 and later)
- MacBook Pro (2012 and later)
- MacBook Air (2012 and later)
- iMac (2012 and later)
- Mac Mini (2012 and later)
2. Clean up your hard drive
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.
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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:
- Download CleanMyMac here.
- Run the app and click Scan.
- Click Run.
That’s it! Gigabytes of junk are gone from your computer forever.
3. Back up your Mac
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.
How to Install Windows with Boot Camp
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.
Step 1: Get a Windows disk image
First of all, you need to get the Windows disk image (ISO file) from the Microsoft website. Here’s how to download it:
- Visit the Windows 10 disk image download website.
- Go to the Select edition menu and choose Windows 10.
- Click Confirm.
- Choose the language of installation and click Confirm.
- Click 64-bit Download and then click Save.
The ISO file now will be downloaded to your Mac.
Step 2: Open Boot Camp Assistant
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.
Step 3: Create a partition for Windows
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.
Step 4: Install Windows
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:
- Choose your ISO file and click the Install button.
- Type your Password and click OK. You will see the Windows Setup screen.
- Select your language.
- Click Install Now.
- Type your product key if you have it. Otherwise, click 'I don’t have a product key'.
- Select Windows 10 Pro or Windows Home and then click Next.
- Click Drive 0 Partition X: BOOTCAMP.
- Click Next. Windows 10 will be installed.
- When the Setup screen appears, click either Use Express Settings or Customize Your Installation. We recommend you to choose the Customize button and disable most, if not all of the switches.
- Then you’ll be asked to create an account. Type a username. You can also add a password if you want.
- Click Next.
- Choose whether you want to use the Cortana personal assistant or not. You can disable it by clicking Not Now button.
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.
Step 5: Restart your Mac
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.
How to remove Windows from your Mac
If for some reasons you don’t need Windows anymore, you can permanently remove it from your Mac. Follow these steps:
- Boot into macOS, launch Boot Camp Assistant and click Continue.
- Choose 'Remove Windows 7 or later version' or 'Remove Windows 10 or later version'.
- Click Restore when you see the Restore Disk to a Single Volume option.
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!
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To troubleshoot an issue with Windows 10 (especially boot-related issues), it can be handy to boot to Windows 10 that is not installed on a Boot Camp partition. It is relatively straightforward to create a bootable USB Flash drive to boot to the Windows 10 installer, and then open up a DOS prompt for troubleshooting.
What is needed
- USB Flash drive (8 GB or larger recommended)
- Windows 10 Installer ISO for Windows 10
Preparation
All the preparation is done in macOS on the Mac that is having an issue booting Windows. It is important to use this Mac since it will be used to identify the correct Windows drivers.
USB Flash Drive
The USB Flash drive must be formatted as exFAT.
- Insert an 8GB or larger flash drive into a USB port on the Mac
- In Disk Utility, format the Flash drive as exFAT. Quit Disk Utility after this operation completes.
Boot Camp Driver
Open Boot Camp Assistant in the Utilities folder, and download the current Windows Support Software from the Action menu. Save the Windows Support Software to your desktop or other location, but do not save directly to the USB Flash Drive.
Windows Install Media
Download the current install media from the Microsoft website. Windows is not going to be installed, but the install media will give access to the command line tools in Windows. Select the version of Windows that is closes to the version of Windows installed on the Mac (Windows 8, Windows 10). It does not matter what edition of Windows is used since Windows is not going to be installed.
Create Recovery USB Flash Drive
To create the USB Flash drive, follow these steps:
- Mount the Windows ISO that was downloaded from Microsoft. To mount the ISO, double click on the ISO in the Finder.
- Drag all the files and folders from the mounted ISO to the USB Flash Drive.
- Drag the contents of the Windows Support Software to the USB Flash Drive.
- If there is not an AutoUnattend.xml at the top level of the drive (as shown below), download AutoUnattend.xml, unzip it, and add it to the drive. AutoUnattend.xml provides the location of the $WinPEDriver$ folder to load the drivers during boot.
- The 2018 MacBook Air (and potentially Macs after that) have cannot load the IntelMEI driver and give a “Windows Setup could not install one or more boot-critical drivers. To install Windows, make sure that the drivers are valid, and restart the installation”. On the USB Flash drive, open the $WinPEDriver$ and remove the IntelMEI folder.
Once the Flash drive has been created, it should look like this:
The $WinPEDriver$ folder is important because the $WinPEDriver$ folder contains the drivers for Windows to boot successfully from the USB Flash drive and the hardware on that Mac.
Boot from the USB Flash drive
To inject the drivers, the Mac must be booted from the USB Flash drive.
- Insert the USB Flash drive into an available USB port on the Mac
- Reboot while holding the option key.
- Select EFI volume in the startup selector.
If Windows does not boot from the USB Flash drive after showing the Windows logo, you may have to run the following command to tell the firmware to boot the windows installer from the USB flash drive. This has been observed on the late-2014 Mac Mini but may affect other models as well. To set the variable:
- Disable SIP by booting to the recovery partition.
- Boot back to macOS and open Terminal. Run the follow command and enter the admin password when prompted:
sudo nvram InstallWindowsUEFI=1
Insert the USB flash drive if it is not inserted, reboot, and select the EFI volume from the startup selector.
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Note the InstallWindowsUEFI variable is cleared at each reboot, so you will to set it again if you do not select the USB Flash Drive.
Command Prompt and Mapped Drives
When Windows 10 starts up, it will prompt for installation of Windows 10. To open up a DOS window, press Fn-Shift-F10 (or just shift-F10) or click Repair Computer->Troubleshoot->Command Prompt (if available).
Once in the command prompt, there are usually 3 drive letters available: X, C, and D.
- X: This is Windows that you are booted into in memory. The files from the boot.wim on the flash drive are copied to memory and then booted to.
- C: Boot Camp partition
- D: The USB Flash drive
Running Utilities
Within the Windows command prompt, you can run utilities on the Boot Camp partition.