Install Ubuntu on RAID 0 and UEFI/GPT system

ubuntu-raid.sh

# http://askubuntu.com/questions/505446/how-to-install-ubuntu-14-04-with-raid-1-using-desktop-installer
# http://askubuntu.com/questions/660023/how-to-install-ubuntu-14-04-64-bit-with-a-dual-boot-raid-1-partition-on-an-uefi%5D

sudo -s
apt-get -y install mdadm
apt-get -y install grub-efi-amd64
sgdisk -z /dev/nvme0n1
sgdisk -z /dev/nvme1n1
sgdisk -n 1:0:+300M -t 1:ef00 -c 1:"EFI System" /dev/nvme1n1
sgdisk -n 2:0:0 -t 2:fd00 -c 2:"Linux RAID" /dev/nvme1n1
sgdisk /dev/nvme0n1 -R /dev/nvme1n1 -G
mkfs.fat -F 32 /dev/nvme0n1p1
mkdir /tmp/nvme0n1p1
mount /dev/nvme0n1p1 /tmp/nvme0n1p1
mkdir /tmp/nvme0n1p1/EFI
umount /dev/nvme0n1p1

mdadm --create /dev/md0 --level=0 --raid-disks=2 /dev/nvme[01]n1p2

sgdisk -z /dev/md0
sgdisk -N 1 -t 1:8300 -c 1:"Linux filesystem" /dev/md0

ubiquity -b
# Once ubiquity has finished press "Continue Testing" and continue with the steps.

mount /dev/md0p1 /mnt
mount -o bind /dev /mnt/dev
mount -o bind /dev/pts /mnt/dev/pts
mount -o bind /sys /mnt/sys
mount -o bind /proc /mnt/proc
cat /etc/resolv.conf >> /mnt/etc/resolv.conf
chroot /mnt

nano /etc/grub.d/10_linux
# change quick_boot and quiet_boot to 0

apt-get install -y grub-efi-amd64
apt-get install -y mdadm

nano /etc/mdadm/mdadm.conf 
# remove metadata and name

update-grub

mount /dev/nvme0n1p1 /boot/efi
grub-install --boot-directory=/boot --bootloader-id=Ubuntu --target=x86_64-efi --efi-directory=/boot/efi --recheck
update-grub
umount /dev/nvme0n1p1

dd if=/dev/nvme0n1p1 of=/dev/nvme1n1p1

efibootmgr -c -g -d /dev/nvme1n1 -p 1 -L "Ubuntu #2" -l '\EFI\Ubuntu\grubx64.efi'

exit # from chroot
exit # from sudo -s
reboot

Thank you too for this fork. It works great.

However, lines 9-11 are misspelled a little:

sgdisk -n 1:0:+300M -t 1:ef00 -c 1:"EFI System" /dev/nvme1n1
sgdisk -n 2:0:0 -t 2:fd00 -c 2:"Linux RAID" /dev/nvme1n1
sgdisk /dev/nvme0n1 -R /dev/nvme1n1 -G

either lines 9-10 should refer to nvme0n1, so it's a "source" in line 11,
or line 11 should reverse nvme0n1 and nvme1n1, so the last is a "source".