i have a wd 2tb red hard drive and want to know why cant i partition my hard drive and dule boot windows 8.1 pro 64 upgrade and windows 7 64. with windows 8.1 pro 64 upgrade install first thank you Bruce Bergeson
We do not support this type of configurations.
How to install more than one operating system on a hard drive or dual boot a system
http://wdc.custhelp.com/app/answers/detail/a_id/121
You can visit Windows support for more information.
http://windows.microsoft.com/en-gb/windows/install-multiple-operating-system-multiboot#1TC=windows-7