wanted to install 64-bit Windows 8

[muiacir]

I have some basic questions
1 - i wanted to install a windows 8 in 64 bit in my system but it said that it could not install in drive c because that format is mbr and windows only can install in gpt.why?
2 - after convert all of my hard to gpt and install the win8 , i checked the partitions again by the acronis disk direcor but it said the hard is still in mdr format , why?
3 - is it possible to convert one a partitions of my hard(for example the E drive) to the gpt and then install the windows on that?

 

[theog]

As the new MOBO's now have a uEFI/BIOS firmware.
How to install Windows 64 bit on a uEFI/BIOS firmware:

UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with

 

[muiacir]

As the new MOBO's now have a uEFI/BIOS firmware.
How to install Windows 64 bit on a uEFI/BIOS firmware:

UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with

Thanks
can you please tell me how to partitioning this system correctly?(if you recommend a program please tell me the basics of that)