As discussed elsewhere, Windows Server 2008/R2 will automatically use the EFI boot loader when installed on EFI systems, and will also automatically use the GPT partitioning scheme on such systems. ...
I have RAID1 md0 for /boot consisting of 4 partitions (sda2, sdb2, sdc2, sdd2). I'm using GPT on 2TB HDDs, so first partitions on each disk (sda1, ...) are 1-megabyte bios_grub partitions. I also ...