How to install windows 8 on mac that already has a windows 7

Question

I tried to find an option in bootcamp about creating another partition, but obviously there isn't anything. I just want to ask if there are some way to install another system beside lion and windows 7. Thx..and i do have a 500GB usb drive

Answer 1

On a Mac Pro in my case, to add D/E drive for another OS in existing Bootcamp Windows space if you have sufficient GBs, press Start button on Windows Desktop and key "computer management" into search box. In resulting Computer Management menu, Disk Management right-click on the C: space provides dropdown allowing you to Shrink the C: space by perhaps 60 GB, probably not less than 30 which will result in addition of D or E partition. Windows will format it Ntfs at this point and you can name the drive Windows 8 RP 64 or something.
Be sure that you have copied the "product key" provided you on download page for Windows 8 RP
( http://windows.microsoft.com/en-CA/windows-8/download ). So now when you have your Windows 8 ISO Dvd/Flash? created - I used Windows 7 right-click on ISO download to create DVD-R.
To install, you select this DVD via Mac's boot option menu. When install is done, you run Bootcamp updates as you did for existing Windows version. In my case, I only did first and last (Boot camp 3.1 and Bootcamp 4 or 5).
Note: you can change the default Windows OS boot and menu time in "Advanced System Settings"->Startup and Recovery Settings Tab. When Windows is default/target boot in Mac OS setttings you see the Windows startup menu allowing selection of either 7 or 8 OS.
After Bcamp updates there will be Windows updates and you should be safe with the installed Windows Defender which has been beefed up. You can get Windows Live including Mail, as you wish. Your Pics, Vids, Music can be accessd from the C: drive.
To remove the 8 space, when you no longer want it (First be SURE that Windows 7 is the default OS Boot in Both OSs!!), in Disk Management, right click allows "Delete Volume". When done, you can then "Extend Volume" in Windows 7 area to get it back to what it was.
If you want Windows Media Center which is not option in W 8 RP, you can add it as follows:
1.Swipe in from the right edge of the screen, and then tap Search.
(If you're using a mouse, point to the upper-right corner of the screen, and then click Search.)
2.Enter add features in the search box, and then tap or click Add features to Windows 8.
3.Tap or click I already have a product key.
4.Enter this product key: MBFBV-W3DP2-2MVKN-PJCQD-KKTF7 and then click Next.
5.Select the checkbox to accept the license terms and then click Add features.
6.Your PC will restart and the Windows Media Center tile will be pinned to the Start screen.