well i am using win7 64bit on my lenovo z570 laptop.......i tried to install win8 preview version......it says my hdd is mbr type to use efi type disc u need gpt partition table on hdd.......as per my info bios of my system is already updated and there is a efi folder in C:\windows\boot...........can some one help me out with this???? n ya one more point it allows me to upgrade my win7 to ...
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