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Maybe you have to do it for work. Maybe you’re just curious. Maybe you’re a glutton for punishment who lives on the bleeding edge. Maybe you lost a bet. Whatever the reason, you want to run the Windows 8 Preview Release. I’m not here to judge you.
I’m just here to help you get Windows 8 running on your Mac. There are several ways to accomplish this, but I’m going to look at four options—Boot Camp, Parallels, VMware Fusion and VirtualBox. 
Boot Camp The first requires items that you probably have around the house—a recent Mac and OS X, which ships with Boot Camp, Apple’s dual boot manager. You might want to run Windows on an older machine, as Windows 8 actually has much less stringent hardware requirements than Mac OS X Lion, but the problem is that only Macs since about 2008 have firmware that can boot from disks with the modified boot sectors Microsoft started using in Vista. I was actually able to install an earlier preview release on a 2006 Core Solo Mac mini, but not the latest release, which is unfortunate. It is possible to extract the install into a new disk image with a normal boot sector, but, and you’d need an existing Windows install to attempt it. So, assuming you have a relatively recent Mac, the first thing you’ll need to install Windows 8 Preview Release via Boot Camp is, not surprisingly, a copy of Windows 8 Preview Release, which Microsoft is providing at the cost of only a valid email address and your immortal soul. Since we’ve already determined that you’re using a recent Mac, you’ll want the 64-bit release.
Remember to make note of the activation code. Yes, I said “activation code.” When it’s time to install the Windows 8 Preview Release in Boot Camp, make like you’re installing Windows 7. Apple’s dual boot manager hasn’t been updated yet to recognize Microsoft’s latest operating system. Hey, whoa, whoa. You’re the one who wanted to use Windows, remember? Don’t shoot the messenger. Once you’ve downloaded the disk image, open Disk Utility on a Mac with an optical drive and mount the image in the sidebar.
Click on the disk image and burn it to a blank disk. It’s possible to use a USB disk image, but that also requires an existing Windows install as well as.
Now get ready to lose some hard drive space! The 64-bit version of WIndows 8 requires at least 20GB of disk space; the 32-bit version 18GB. Launch Boot Camp Assistant. On the first screen, uncheck the option to download the latest Windows support software from Apple, and check the option to install Windows 7. (Yes, Windows 7—as of this writing, Apple has not yet updated Boot Camp for Windows 8.) Boot Camp is able to partition your disk without losing any data. Then select how much disk space you want to allocate to the Windows drive. Unlike partitioning a drive using Disk Utility, this process won’t wipe your existing data; it’ll just allocate a section of your free space for Windows.
(If you want to reclaim it later, you can run Boot Camp Assistant again to remove it.) Put your burned Windows 8 install disk in the drive and click Install. Your Mac will restart, and you should see the dreadful uh, I mean happy Windows installation dialog. Games for mac online download.
You can take it from there. I don’t support Windows unless you’re family. Parallels While Boot Camp will let you run Windows natively, Parallels almost makes installing Windows 8 a pleasure by comparison. Well, OK, you’re still installing Windows, so maybe that’s stretching things a bit, but it takes care of a lot of the process for you.
First download and install Parallels from that company’s. Parallels kindly offers a two-week trial period; after that the software costs $80 for a license. Parallels Desktop makes the process of getting Windows as painless as anything involving Windows can be.