I also used instructions from here: http://askubuntu.com/questions/355727/how-to-install-ubuntu-server-with-uefi-and-raid1-lvm
cp /usr/sbin/grub-install /usr/sbin/grub-install.backup patch /usr/sbin/grub-install patch umount /boot/efi mount /dev/sda1 /boot/efi grub-install /dev/sda1 umount /boot/efi mount /dev/sdb1 /boot/efi grub-install /dev/sdb1 reboot
I also used instructions from here: http:// askubuntu. com/questions/ 355727/ how-to- install- ubuntu- server- with-uefi- and-raid1- lvm
cp /usr/sbin/ grub-install /usr/sbin/ grub-install. backup grub-install patch
patch /usr/sbin/
umount /boot/efi
mount /dev/sda1 /boot/efi
grub-install /dev/sda1
umount /boot/efi
mount /dev/sdb1 /boot/efi
grub-install /dev/sdb1
reboot