- Aug 05, 2011 The hidden costs of running Windows on a Mac. Thinking of running Windows on a Mac? You can choose Boot Camp or a virtual machine, but are hidden costs in performance for both options.
- Virtual Machines. We recommend using a virtual machine program, ideally Parallels or VMWare Fusion, to run Windows applications on a Mac without rebooting.For maximum performance, which is particularly necessary for gaming, we recommend dual-booting Windows with Boot Camp instead.
If you want to run Windows on your Mac there are two ways to do it. One is to partition your main drive using the built-in Bootcamp Assistant and then install Windows on the partition that doesn’t house macOS. You can then boot into whichever operating system you choose.
While that method means running Windows natively and so is optimal in terms of performance, it means you have to reboot every time you want to move between operating systems and you can’t, for example, copy and paste between macOS and Windows. If you want to run Windows and macOS side by side, you’ll need to create a Windows virtual machine for Mac.
What is a virtual machine?
A virtual machine (VM) is a computer that’s created in software and looks and feels just like a real PC. But it runs inside a Mac application. The whole virtual machine, with the operating system and all its applications, is stored inside one big file on your Mac. That means you can have multiple virtual machines on the same Mac. Once you launch it and ‘boot’ the virtual PC, Windows VM on Mac behaves like any other Windows machine, except that it’s running inside a window on your Mac.
Instead of splitting your Mac's hard drive into separate partitions, and then installing Windows on to the Boot Camp partition, these programs create a 'virtual machine' - or VM - which is simply.
If you have two screens connected to your Mac, you can have macOS on one and Windows on the other. Or you can use Mission Control to swipe between them. A virtual machine can share accessories like printers and external storage with your Mac, and you can copy and paste between the two operating systems. You can even set up the virtual machine to use Mac keyboard shortcuts instead of their Windows equivalents.
Can I run a virtual machine on my Mac?
As long as your Mac has an Intel processor (and it will have unless it’s more than 12 years old), in theory it can run a virtual machine. However, running a virtual machine alongside macOS needs lots of memory (at least 8GB in total, and more if you want to run more than one virtual machine) and at least two processor cores. You’ll also need at least 16-20GB of hard drive space, and that’s before you start installing applications and saving files. Most modern Macs should run any of the virtual machine applications described here without a problem.
The other thing you’ll need is a copy of Windows. Virtual machine applications don’t come with Windows installers, so you’ll need to supply your own, along with a licence key.
Best virtual machine software for Mac
There are three contenders here: Parallels Desktop, VMWare Fusion, and VirtualBox. We’ll discuss Virtual Box in the next section.
Parallels Desktop 13
The latest version of Parallels Desktop has support for features in the latest Macs, like the MacBook Pro’s Touch Bar. It also allows you to make the Windows desktop ‘invisible’ when you’re running apps, so it looks like you’re just running Windows apps in macOS. Or, if you prefer, you can shrink Windows desktop down to a thumbnail preview, so it doesn’t get in the way but you can keep an eye on what it’s doing.
Of course, virtual machines aren’t just about running Windows on your Mac. Parallels Desktop allows you to install Linux, or a different version of macOS, say a beta of the next version if you don’t want to install it on your Mac. If you’ve previously installed Windows on a Boot Camp partition, you can use that partition as a virtual machine, allowing you to boot into it from within Parallels without re-booting your Mac.
Touch Bar support includes functions in Microsoft Office apps, as well as Windows Task Bar.
When it comes to performance, Parallels Desktop is about as good as it gets for virtual machines. That means you can run most applications just fine, but demanding 3D graphics-intensive games, and other apps that place lots of demands on the CPU and GPU are still a bit of a struggle. If you want to run those in Windows, you’re still better off using Boot Camp.
VMWare Fusion
The other main contender when it comes to running a virtual machine on your Mac is VMWare Fusion. It comes in two versions, Fusion 10, which costs about the same as Parallels Desktop, and Fusion 10 Pro, which is more expensive but adds feature aimed at enterprise customers, such as support for managing virtual servers.
In terms of features, there’s little to choose between Parallels Desktop and Fusion. Like its rival, Fusion allows you to choose between running Windows inside a window on your Mac (or full-screen if you prefer) and in what it calls Unity mode, where the operating system disappears and Windows apps look like they’re running natively on the Mac. That means you can run Windows and Mac apps alongside each other and switch between them seamlessly. You can also copy and paste between Mac and Windows, share peripherals, and map Mac keyboard shortcuts in Windows.
Support for OpenGL and DX10, as well as Apple’s Metal technology means that playing resource-hungry games is theoretically possible. But, as with Parallels, performance in the latest games lags behind Boot Camp and may prove frustrating.
The latest version of Fusion adds support for the MacBook Pro’s Touch Bar.
Choosing between Parallels Desktop and VMWare Fusion may be as much a matter of a preference for one or the other’s user interface. They have very similar features, and cost almost the same. Fortunately, both offer free trials — Parallels for 14 days and Fusion for 30 days — so you can download each one and try them out before making a decision on which to buy.
Best free virtual machine software for Mac
If you want to run a virtual machine on your Mac but can’t stretch to the $70 for Parallels or Fusion, there is a third option — VirtualBox. Owned by Oracle and made available as open-source software for personal or educational use, VirtualBox won’t cost you a penny if you fall into either of those two categories.
That’s the good news. The bad news is that VirtualBox, because it’s open source and free lacks all of the polish of Parallels Desktop and VMWare Fusion. While it does the basics competently, it’s much less user friendly and much less easy to use than the other two. And while there is help available online from other users, there’s no official support if you run into problems. And remember, while VirtualBox itself is free, you’ll still need to supply your own copy of Windows. Alternatively, you could use VirtualBox to run Linux on your Mac, instead of Windows.
Alternatives to a virtual machine
As we mentioned earlier, the alternative to running a virtual machine on your Mac is to partition your main drive using the built-in Boot Camp Assistant (it’s in the Utilities folder). You can then install Windows or Linux, or another version on macOS, on the other partition.
Boot Camp Assistant is very easy to use and once you’ve set it up, booting into, say, Windows, is just like using it natively on a PC. That means, of course, that you won’t be able to copy and paste between Mac and Windows, and you won’t be able to use external storage that’s formatted in APFS or Mac OS Extended, but Windows will run faster than it does on a virtual machine.
If you plan to use Boot Camp Assistant to partition your main drive, remember to back it up first. Partitioning a drive is not quite major surgery, but it definitely carries the risk of losing data.
How to make space for a virtual machine on your Mac
Depending on how many applications you plan to install on your virtual machine and what you plan to use it for, you may need tens of gigabytes of free space on your Mac. If space is tight, don’t worry, there’s plenty you can do to make room. As a first step, we recommend installing CleanMyMac X. It scans your Mac and looks for files that can be safely deleted. These include “junk” system files like cache files and other temporary files that are still hanging around, as well as language support files, and data in Photos and iTunes you may not need. Once it’s scanned your Mac and found all those files, you can delete them all with a click, or review the results of the scan and decide for yourself what you want to trash.
CleanMyMac can also uninstall files completely, getting rid of all the files that are left if you just drag and app to the Trash, and highlight large and old files that you haven’t opened for a while. Best of all, you can download it free here and give it a try. You’ll be surprised about how much space you can free up.
Virtual machines are the most convenient way of running a second operating system on your Mac. The ones we have highlighted here are the best VMs for Mac, so download one and give it a go.
6 0 likes 46,737 views Last modified Jul 28, 2013 2:34 PM
Hello and welcome to my User Tip
I wrote this because we get a lot of questions what would be the best way to run Windows on a Mac.
If one PC program or so, you can check if it will run well in the program called Wine, but it might be a hassle and problematic.
If one PC program or so, you can check if it will run fine in the program called Codeweavers, but it might be a hassle and problematic.
You can run a paid commercial virtual machine program (Parallels or VMFusion) that runs Windows/Linux and some OS X versions in a window in OS X, the updates are paid some are more frequent, but it gives more features (copy BootCamp partition to use as a vm for instance) and ease to install. Easy to revert to earlier snapshots of the guest OS. Have to purchase a copy of Windows.
You can run a free virtual machine program (VirtualBox) which will do the job like the commercial ones do (revert snapshots too), but isn't as feature rich, but it is supported in older OS X versions a lot longer than the commercial versions and it is free, so it only nags to update.
You can run Windows in Apple's BootCamp, which partitions the boot drive and you install Windows in there, which gives the best hardware performance as one directly boots into Windows, but you can't use Windows System Restore or other disk/backup utilities but there is WinClone which clones it from OS X to restore later.
BootCamp - Pro's
Full access to the hardware for 3D games and heavier CPU needs
Can run on less powerful Mac hardware
Free, included with all new Mac's.
Easy Mac like setup for BootCamp partition
BootCamp - Con's
More 'geekier' requires more computer knowledge and skills.
Have to boot into OS X or Windows at start time by holding the option key down (to switch if other is set to start first)
Get's malware like a PC, hard to eradicate, may affect OS X
Have to use WinClone to make backups
Have to keep OS X partition on the drive for updates, firmware, repairs.
Harder to fix and repair than a generic PC which third party Windows software designed for
Only supports Windows 7 (recent OS X version supports Windows 8 also.)
Issues with partitioning with bad sectors and/or data on the lower part of the drive
There are plenty of videos on YouTube showing the install method too.
Backing up BootCamped Windows: For cloning/backing up Windows in BootCamp, search for 'WinClone' on MacUpdate.com, runs in OS X.
BootCamp issues:
For bad sector issues and failing to partition: on hard drives, (SSD's not affected). Quit Bootcamp and use Disk Utility from the OS X install Disk or via Recovery HD (hold command r at boot) to Repair the drive two times to make sure.
Then reboot normally and then use Disk Utitity > Erase Free Space > Zero option (not Erase w/Security Option > Zero) and on 10.7 or later 'Zero' in Disk Utility is the slider selection #2 (one space to the right) and make sure it's Erase FREE space only on the Macintosh HD partition only.
Once that's finished, quit and try partitioning BootCamp in the BootCamp Utility again.
Can't parititon/move files issue: For data on the lower part of the hard drive (not SSD's) that inhibits the creation/size of the BootCamp partition, requires backing up User data, cloning OS X partition off to a external drive, erasing the OS X internal drive partition of data and reverse cloning the OS X data back on.
Virtual Machine software - Pro's
Runs guest OS in a window on OS X, more friendly to new users and those not sure yet.
Easy to switch from OS X to Windows to Linux back and forth, as many operating systems as your RAM can support.
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Commercial versions of VM software can copy presently installed BootCamp and use that Windows in OS X for best of both BootCamp AND virtual machine versions.
Easier to use, 'snapshots' of Guest OS state can be reverted back to in seconds for updates/malware issues.
Fl studio kontakt download. Runs most any OS version, Windows XP, Vista, 7, 8, Linux's, OS X Server editions only (VMed Lion in Lion, ok)
Mac Boot Camp Virtual Machines
Run more than one Guest OS at a time with enough RAM and drive space
Easier to use for most lightweight guest OS programs, no need to dual boot, run guest OS like a file in a program.
Virtual Machine Boot From Usb
Some integration possibilities, copy and paste, shared folders etc between the two or more OS's
Easier to get out of trouble via the virtual machine software or OS X 'Force Quit'
Virtual Machine software - Con's
Guest OS doesn't have access to the hardware, no Direct X, 3D animation limited /slowed apx 1/5th speed as native boot, really only shows on 3D games etc.
Requires more RAM, more powerful machine: 4+ cores, 4GB+ RAM, dedicated video card preferred. (2 cores 2GB RAM possible but not recommended)
Have to share RAM and cores with OS X
Can't run OS X client versions (except Lion in Lion) as Apple asked them not too.
Note: I scaled the virtual machines windows down for effect, they can be full size or larger
More advice in this User Tip here