arch-linux-install

# Install ARCH Linux with UEFI and (optionally) encrypted file-system
# The official installation guide (https://wiki.archlinux.org/index.php/Installation_Guide) contains a more verbose description.

# Integrate tips from here https://eatpeppershothot.blogspot.ca/2016/12/kernel-boot-parameters-for-grub-and.html

# Create GPT disk label and create partitions
parted --script /dev/sdX \
  mklabel gpt \
  mkpart ESP fat32 1MiB 100MiB \
  set 1 boot on \
  name 1 EFI \
  mkpart primary 100MiB 100% \
  name 2 ArchLinux
  
# Validate Partitions
parted /dev/sdX print

# Make ESP filesystem
mkfs.vfat -F32 /dev/sdX1

# Optional - Encryption Setup for /dev/sdX2 for LVM on LuKS
# Setup the encryption of the system
cryptsetup -v --cipher aes-xts-plain64 --key-size 512 --use-random luksFormat /dev/sdX2
cryptsetup luksOpen /dev/sdX3 luks

# Create LVM partitions
# This creates one partions for boot and root, modify if /home or other partitions should be on separate partitions
pvcreate /dev/sdX2
vgcreate rootvg /dev/sdX2
lvcreate --size 500M rootvg --name boot
lvcreate --size 8G rootvg --name swap
lvcreate -l +100%FREE rootvg --name root

# Create filesystems on encrypted partitions
mkfs.ext2 /dev/mapper/rootvg-boot
mkfs.ext4 /dev/mapper/rootvg-root
mkswap /dev/mapper/rootvg-swap

# Mount the new system 
mount /dev/mapper/rootvg-root /mnt 
swapon /dev/mapper/rootvg-swap 
mkdir /mnt/boot
mount /dev/mapper/rootvg-boot /mnt/boot
mkdir /mnt/boot/efi
mount /dev/sdX1 /mnt/boot/efi

# Install the system also includes stuff needed for starting wifi when first booting into the newly installed system
# Unless vim and zsh are desired these can be removed from the command
pacstrap /mnt base base-devel grub-efi-x86_64 zsh vim git efibootmgr dialog wpa_supplicant

# 'install' fstab
genfstab -pU /mnt >> /mnt/etc/fstab
# Make /tmp a ramdisk (add the following line to /mnt/etc/fstab)
tmpfs	/tmp	tmpfs	defaults,noatime,mode=1777	0	0
# Change relatime on all non-boot partitions to noatime (reduces wear if using an SSD)

# Enter the new system
arch-chroot /mnt /bin/bash

# Setup system clock
ln -s /usr/share/zoneinfo/Canada/Eastern /etc/localtime
hwclock --systohc --utc

# Set the hostname
echo MYHOSTNAME > /etc/hostname

# Update locale
echo LANG=en_CA.UTF-8 >> /etc/locale.conf
echo LANGUAGE=en_CA >> /etc/locale.conf
echo LC_ALL=C >> /etc/locale.conf

# Set password for root
passwd

# Add real user remove -s flag if you don't whish to use zsh
# useradd -m -g users -G wheel -s /bin/zsh MYUSERNAME
# passwd MYUSERNAME

# Configure mkinitcpio with modules needed for the initrd image
vim /etc/mkinitcpio.conf
# Add 'ext4' to MODULES
# Add 'encrypt' and 'lvm2' to HOOKS before filesystems

# Regenerate initrd image
mkinitcpio -p linux

# Setup grub
grub-install
In /etc/default/grub edit the line GRUB_CMDLINE_LINUX to GRUB_CMDLINE_LINUX="cryptdevice=/dev/sdX3:luks:allow-discards" then run:
grub-mkconfig -o /boot/grub/grub.cfg

# Exit new system and go into the cd shell
exit

# Unmount all partitions
umount -R /mnt
swapoff -a

# Reboot into the new system, don't forget to remove the cd/usb
reboot