How to Install Arch Linux on Encrypted LVM

In this video, the viewer is shown how to create a custom installation of Arch Linux with EFI, LVM, and Encryption.

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Installation Steps

Download latest Arch linux ISO

https://www.archlinux.org/download/

Check if there is an Internet connection (if on wired)
 ip addr show
For WiFi, you can use wifi-menu
 wifi-menu
If you do have a network connection but no IP address use:
 dhcpcd
Edit the mirrorlist (optional)
 nano /etc/pacman.d/mirrorlist
Update repository index
 pacman -Syyy
See partitions/drives on the system (find the name of your hard drive)
 fdisk -l
Start the partitioner (fdisk)
 fdisk /dev/<DEVICE> (substitute <DEVICE> for your device name, example: /dev/sda or /dev/nvme0n1)
Show current partitions
 p
Create EFI partition
 g (to create an empty GPT partition table)
 n
 enter
 enter
 +500M
 t
 1 (For EFI)
Create boot partition
 n
 enter
 enter
 +500M
Create LVM partition
 n
 enter
 enter
 enter
 t
 enter
 30
Show current partitions again
 p
Finalize partition changes
 w
Format the EFI partition
 mkfs.fat -F32 /dev/<DEVICE PARTITION 1> (for example: /dev/sda1)
Format the boot partition
 mkfs.ext4 /dev/<DEVICE PARTITION 2> (for example: /dev/sda2)
Set up encryption
 cryptsetup luksFormat /dev/<DEVICE PARTITION 3>
 cryptsetup open --type luks /dev/<DEVICE PARTITION 3> lvm
Set up lvm
 pvcreate --dataalignment 1m /dev/mapper/lvm
 vgcreate volgroup0 /dev/mapper/lvm
 lvcreate -L 30GB volgroup0 -n lv_root
 lvcreate -L 250GB volgroup0 -n lv_home (or instead of "-L 250GB", use "-l 100%FREE" to use all the remaining space).
 modprobe dm_mod
 vgscan
 vgchange -ay
Format the root partition
mkfs.ext4 /dev/volgroup0/lv_root
Mount the root partition
mount /dev/volgroup0/lv_root /mnt
Create the boot partition mount directory
mkdir /mnt/boot
Mount the boot partition
mount /dev/<DEVICE PARTITION 2> /mnt/boot
Format the home partition
mkfs.ext4 /dev/volgroup0/lv_home
Create the home partition mount point
mkdir /mnt/home
Mount the home volume
mount /dev/volgroup0/lv_home /mnt/home
Create the /etc dirctory
mkdir /mnt/etc
Create the /etc/fstab file
genfstab -U -p /mnt >> /mnt/etc/fstab
Check the /etc/fstab file
cat /mnt/etc/fstab
Install Arch Linux base packages
pacstrap -i /mnt base
Access the in-progress Arch installation
arch-chroot /mnt
Install a kernel and headers
pacman -S linux linux-headers

For LTS:

pacman -S linux-lts linux-lts-headers

Or both:

pacman -S linux linux-lts linux-headers linux-lts-headers 
Install a text editor
pacman -S nano
Install optional packages
pacman -S base-devel openssh
Enable OpenSSH if you’ve installed it
systemctl enable sshd
Install packages for networking
pacman -S networkmanager wpa_supplicant wireless_tools netctl
Install dialog (required for wifi-menu)
pacman -S dialog
Enable networkmanager
systemctl enable NetworkManager
Install LVM support
pacman -S lvm2
Edit /etc/mkinitcpio.conf
nano /etc/mkinitcpio.conf

On the “HOOKS” line (line #52 or thereabouts), add “encrypt lvm2” in between “block” and “filesystems”

It should look similar to the following (don’t copy this line in case they change it, but just add the two new items):

HOOKS=(base udev autodetect modconf block encrypt lvm2 filesystems keyboard fsck)
Create the initial ramdisk for the main kernel
mkinitcpio -p linux
Create the initial ramdisk for the LTS kernel (if you installed it)
mkinitcpio -p linux-lts
Uncomment the line from the /etc/locale.gen file that corresponds to your locale
nano /etc/locale.gen (uncomment en_US.UTF-8)
Generate the locale
locale-gen
Set the root password
passwd
Create a user for yourself
useradd -m -g users -G wheel <username>
Set your password
passwd <username>
Install sudo (may already be installed)
pacman -S sudo
Allow users in the ‘wheel’ group to use sudo
EDITOR=nano visudo

Uncomment:

%wheel ALL=(ALL) ALL
Install packages for GRUB
pacman -S grub efibootmgr dosfstools os-prober mtools
Edit /etc/default/grub
nano /etc/default/grub

Uncomment:

GRUB_ENABLE_CRYPTODISK=y

Add cryptdevice=<PARTUUID>:volgroup0 to the GRUB_CMDLINE_LINUX_DEFAULT line If using standard device naming, the option will look like this:

cryptdevice=/dev/sda3:volgroup0:allow-discards quiet
Create the directory for EFI boot
mkdir /boot/EFI
Mount the EFI partition
mount /dev/<DEVICE PARTITION 1> /boot/EFI
Install GRUB
grub-install --target=x86_64-efi --bootloader-id=grub_uefi --recheck
Create the locale directory for GRUB
mkdir /boot/grub/locale
Copy the locale file to locale directory
cp /usr/share/locale/en\@quot/LC_MESSAGES/grub.mo /boot/grub/locale/en.mo
Generate GRUB’s config file
grub-mkconfig -o /boot/grub/grub.cfg
Create swap file
fallocate -l 2G /swapfile
chmod 600 /swapfile
mkswap /swapfile
Back up the /etc/fstab file
cp /etc/fstab /etc/fstab.bak
Add the swap file to the /etc/fstab file
echo '/swapfile none swap sw 0 0' | tee -a /etc/fstab
Check the /etc/fstab file to make sure it includes all the right partitions
cat /etc/fstab

You should have a mountpoint for the root filesystem, boot partition, home partition, and swap file

Wrapping Up, Optional Considerations

Install CPU Microde files (AMD CPU)
pacman -S amd-ucode
Install CPU Microde files (Intel CPU)
pacman -S intel-ucode
Install Xorg if you plan on having a GUI
pacman -S xorg-server
Install 3D support for Intel or AMD graphics

If you have an Intel or AMD GPU, install the mesa package:

pacman -S mesa
Install Nvidia Driver packages if you have an Nvidia GPU
pacman -S nvidia nvidia-utils

Note: Install nvidia-lts if you’ve installed the LTS kernel:

pacman -S nvidia-lts
Optional: Install Virtualbox guest packages

If you’re installing Arch inside a Virtualbox virtual machine, install these packages:

pacman -S virtualbox-guest-utils xf86-video-vmware

Moment of truth: Reboot your machine

Exit the chroot environment
exit
Unmount everything (some errors are okay here)
umount -a
Reboot the machine
reboot