Steps for setting up Archlinux with LVM over LUKS (no keyfile), syslinux with GPT

Steps

cgdisk /dev/sda
-----------------
sda1 512M EF00
sda2 200M 8300
sda3 rest 8300

cryptsetup -c aes-xts-plain -y -s 512 luksFormat /dev/sda2
cryptsetup luksOpen /dev/sda2 cryptroot
pvcreate /dev/mapper/cryptroot
vgcreate vg /dev/mapper/cryptroot
lvcreate -L 15G -n root vg
lvcreate -L 1G -n swap vg
lvcreate -L 12G -n var vg
lvcreate -L 20G -n home vg
mkfs.vfat /dev/sda1
mkfs.ext4 /dev/sda2
mkfs.ext4 /dev/mapper/vg-root
mkfs.ext4 /dev/mapper/vg-var
mkfs.ext4 /dev/mapper/vg-home
mkswap -L swap /dev/mapper/vg-swap 
mount /dev/mapper/vg-root /mnt
mkdir /mnt/boot
mkdir /mnt/boot/efi
mkdir /mnt/home
mkdir /mnt/var
mount /dev/sda2 /mnt/boot
mount /dev/sda1 /mnt/boot/efi
mount /dev/mapper/vg-home /mnt/home
mount /dev/mapper/vg-var /mnt/var
swapon /dev/mapper/vg-swap
nano /etc/pacman.d/mirrorlist
modprobe efivars
pacstrap /mnt base base-devel
genfstab -U -p /mnt >> /mnt/etc/fstab
nano /mnt/etc/fstab
arch-chroot /mnt
echo "en_US.UTF-8 UTF-8" > /etc/locale.gen
locale-gen
echo LANG=en_US.UTF-8 > /etc/locale.conf
export LANG=en_US.UTF-8
loadkeys us
setfont Lat2-Terminus16

nano /etc/vconsole.conf
------------------------
KEYMAP=us
FONT=Lat2-Terminus16

ln -s /usr/share/zoneinfo/Europe/Zurich /etc/localtime
hwclock --systohc --utc
echo zim > /etc/hostname
nano /etc/mkinitcpio.conf
mkinitcpio -p linux
passwd
mkdir /boot/efi/EFI/arch/
cp /boot/vmlinuz-linux /boot/efi/EFI/arch/vmlinuz-arch.efi
cp /boot/initramfs-linux.img /boot/efi/EFI/arch/initramfs-arch.img
cp /boot/initramfs-linux-fallback.img /boot/efi/EFI/arch/initramfs-arch-fallback.img
pacman -S refind-efi efibootmgr
mkdir -p /boot/efi/EFI/refind
cp /usr/lib/refind/refind_x64.efi /boot/efi/EFI/refind/refind_x64.efi
cp /usr/lib/refind/config/refind.conf /boot/efi/EFI/refind/refind.conf
cp -r /usr/share/refind/icons /boot/efi/EFI/refind/icons

nano /boot/efi/EFI/arch/refind_linux.conf
-----------------------------------------------------------------------------------------
"Boot to X"          "root=/dev/mapper/vg-root cryptdevice=/dev/sda3:cryptroot:allow-discards ro rootfstype=ext4 systemd.unit=graphical.target"
"Boot to console"    "root=/dev/mapper/vg-root cryptdevice=/dev/sda3:cryptroot:allow-discards  ro rootfstype=ext4 systemd.unit=multi-user.target"

efibootmgr -c -g -d /dev/sda -p 1 -w -L "rEFInd" -l '\EFI\refind\refind_x64.efi'
pacman -S networkmanager