problem installing windows 7

[ahmed20]

I`ve WD 4TB converted it to GPT to use all available space 3726gb on 3 partitions
when I`m gonna setup windows 7 ultimate x64 it says "the selected disk is of the gpt partition style"
and if i convert to MBR I can use only 2TB of 3726 GB
Thanks in advance

 

[popatim]

You need a UEFI based motherbd (it has a graphical bios that you can use a mouse with) to use a drive of that size as a boot drive. If you have that then you just need to make sure the bios is in UEFI mode (as opposed to legacy or compatibility mode) and then install win7 in UFEI mode
http://www.sevenforums.com/tutorials/186875-uefi-unified-extensible-firmware-interface-install-windows-7-a.html

 

[SuperSoph_WD]

Hey there, Ahmed!

I'm sorry to hear about your issue, but @popatim is right! You'd need to a UEFi-based motherboard in order to be able to install Windows OS (64-bit) onto an HDD that is beyond 2 TB in size. None-UEFi mobos can only use such hard drives as data storage. If that's the case with you, I'd recommend you to consider another booting drive or upgrading your motherboard altogether.

Best of luck!
SuperSoph_WD