longhorn beta2 support efi bios

Longhorn beta2 support EFI Bios?

hi,All: I have downloaded LongHorn Server beta2( build 5384 ) x64 and x86 ISO images. I have a motherboard with pure EFI bios in its onboard FlashROM. I want to install Longhorn on this motherboard ,so i could test this EFI BIOS functions. But,i have some questions not sure. (1) These two iso images all support EFI BIOS(I mean pure EFI bios, no CSM module in EFI bios)? If not,which iso image support EFI BIOS? x64 version or x86 version. (2) If i burned legacy bios into this motherboard's FlashROM,then i installed Longhorn Server on this motherboard. After finished installing Longhorn,i reburned EFI BIOS into this motherboard's FlashROM,then i tried to boot Longhorn which installed on this motherboard before. It will be boot successfully?
Thank you

Windows Vista

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