Is it possible to install Windows Vista 64-bit on mid 2010 27" iMac w/ Mavericks? I have a legal copy of Vista which I used to use before I had a drive failure on my mid 2010 27" iMac. Since then I've installed OSX Mavericks, and now it's telling me that only Windows 7 and 8 are supported via Boot Camp. 

I tried circumventing this by booting from the Vista disk, but it won't let me install because now OSX uses GPT instead of MBR (or so it seems). I really don't want to have to buy Windows 7 since I only need Windows for a few games. Is there any way around or am I stuck?
You can do it without using Boot Camp, just make this few steps:


Install rEFIt.
Resize your disk so you get some free space for vista.
Create a new partition from that free space.
Boot up your Mac with the Vista install disk inserted.
Install Vista onto the new created partition.


If you need a more detailed How-To/Tutorial/Manual/Assist (or what ever you will call it), have a look here http://lifehacker.com/5531037/how-to-triple-boot-your-mac-with-windows-and-linux-no-boot-camp-required