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Arch: Installation

Install Arch Linux with UEFI + LUKS + LVM + BTRFS + Unified Kernel Image + Secure Boot

DISCLAIMER

THE WIKI IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE WIKI OR THE USE OR OTHER DEALINGS IN THE WIKI.

Installation Steps

Connect to Wifi

Source: iwctl

iwctl
[iwd]# device list
[iwd]# device deviceName set-property Powered on
[iwd]# station deviceName scan
[iwd]# station deviceName get-networks
[iwd]# station deviceName connect SSID
exit

Check internet

ping archlinux.org

Check system time

timedatectl

Partition disks

Check disk

fdisk -l

Create partitions disk

  1. Enter fdisk

    fdisk /dev/sdX

  2. Create GPT label

    Command (m for help): g
Created a new GPT disklabel (GUID: ...).

  3. Create boot partition

    Command (m for help): n
Partition number: 
First sector: 
Last sector, +/-sectors or +/-size{K,M,G,T,P}: +512M

Command (m for help): t
Partition type or alias (type L to list all): uefi

  4. Make remaining partition for LUKS

    Command (m for help): n
Partition number: 
First sector: 
Last sector, +/-sectors or +/-size{K,M,G,T,P}:

  5. Print partition info to verify

    Command (m for help): p

  6. Write changes (write changes and quit)

    Command (m for help): w

  7. Quit fdisk (quit without writing changes in case of mistakes)

    Command (m for help): q

Format Boot disk

mkfs.fat -F 32 -n EFI /dev/sdXY

Setup LUKS

Create LUKS partition

cryptsetup --use-random luksFormat /dev/sdXZ
Are you sure? YES
Enter passphrase:
Verify passphrase:

Open LUKS partition

You can use any other name instead of cryptroot but be sure to replace it everywhere in the following commands

cryptsetup open /dev/sdXZ cryptroot

Note

Once you created LVM, you only need to open the disk with cryptsetup No additional command needed to access volume group (vg) all the existing LVM partitions are accessible right after unlocking the luks partition. This might come in handy if you wish to had to reboot the system after LVM setup

Setup LVM

Create LVM group

pvcreate /dev/mapper/cryptroot
vgcreate vgroot /dev/mapper/cryptroot

Create LVM Partitions

This assumes you don't need separate home partition on LVM

Create swap

lvcreate --size 8G vgroot --name swap

Create root

lvcreate -l +100%FREE vgroot --name root

Format LVM partitions

Format swap

mkswap /dev/vgroot/swap -L swap

Format root

mkfs.btrfs /dev/vgroot/root -L root

Create Btrfs Subvolumes

Mount btrfs partition to /mnt (install target root)

mount -t btrfs LABEL=root /mnt

Create partitions one by one

btrfs subvolume create /mnt/@
btrfs subvolume create /mnt/@home
btrfs subvolume create /mnt/@tmp
btrfs subvolume create /mnt/@varlog
btrfs subvolume create /mnt/@snapshots

Disable Copy-on-Write for tmp and varlog

chattr +C /mnt/@tmp
chattr +C /mnt/@varlog

Unmount /mnt (install target root)

umount -R /mnt

Mount Btrfs Subvolumes

The followings options can be set for mounting - commit = time interval between data-writes in seconds - x-mount.mkdir = make directory if not existing when mounting - ssd = ssd based btrfs optimisations - noatime = do not store access time for files (makes btrfs faster) - nodiratime = do not store directory access time for files (makes btrfs faster) - discard = set as async, asynchronous queued TRIM for discard freed file blocks, check below

check if discard is supported by checking if the output is greater than 0:

cat /sys/block/sdX/queue/discard_max_bytes

Mount btrfs subvolumes one by one:

mount -t btrfs -o defaults,x-mount.mkdir,compress=zstd,ssd,noatime,nodiratime,discard=async,space_cache=v2,commit=120,subvol=@ LABEL=root /mnt
mount -t btrfs -o defaults,x-mount.mkdir,compress=zstd,ssd,noatime,nodiratime,discard=async,space_cache=v2,commit=120,subvol=@home LABEL=root /mnt/home
mount -t btrfs -o defaults,x-mount.mkdir,compress=zstd,ssd,noatime,nodiratime,discard=async,space_cache=v2,commit=120,subvol=@tmp LABEL=root /mnt/tmp
mount -t btrfs -o defaults,x-mount.mkdir,compress=zstd,ssd,noatime,nodiratime,discard=async,space_cache=v2,commit=120,subvol=@varlog LABEL=root /mnt/var/log
mount -t btrfs -o defaults,x-mount.mkdir,compress=zstd,ssd,noatime,nodiratime,discard=async,space_cache=v2,commit=120,subvol=@snapshots LABEL=root /mnt/.snapshots

Mount EFI dir

mkdir -p /mnt/boot/efi
mount LABEL=EFI /mnt/boot/efi

Fix Mirrorlist: Reflector

Install reflector:

pacman -Syy reflector

Configure mirrorlist using reflector:

reflector --verbose --sort rate --save /etc/pacman.d/mirrorlist

Install Base Packages: Pacstrap

pacstrap -K /mnt base linux linux-firmware vim nano

Generate Mount Info Fstab

genfstab -L -p /mnt >> /mnt/etc/fstab

Chroot into Installed Environment

arch-chroot /mnt

Set Timezone

ln -sf /usr/share/zoneinfo/Region/City /etc/localtime
hwclock --systohc

Set Locale

Edit /etc/locale.gen and uncomment the required locales then run:

locale-gen

Create /etc/locale.conf with content:

LANG=en_US.UTF-8

Configure Hostname

echo yourhostname >> /etc/hostname

Install additional packages

Install required programs like shell, development packages, sudo, btfs, secure boot, ucode, bluetooth, wifi, desktop environment, etc

pacman -Syu base-devel btrfs-progs gptfdisk zsh sudo ttf-dejavu noto-fonts noto-fonts-cjk intel-ucode polkit wpa_supplicant mesa lvm2 efibootmgr bash-completion git man pipewire wireplumber pipewire-alsa pipewire-pulse gnome

If installing gnome select pipewire-jack, wireplumber, noto-fonts-emoji in the proceeding interactive questions

Unified Kernel Image Setup

This step is useful for encrypted boot device. You can skip this step if you're using grub as grub comes with decrypting disk before the boot menu is shown. Most other bootloaders do not work with this setup.

Configure mkinitcpio Hooks

Edit /etc/mkinitcpio.conf and add systemd after base; sd-encrypt and lvm2 before filesystems:

HOOKS=(base systemd plymouth modconf keyboard keymap block lvm2 btrfs filesystems sd-encrypt fsck)

Kernel Parameters

Create /etc/kernel/cmdline with contents:

fbcon=nodefer rw rd.luks.allow-discards quiet root=LABEL=root rootflags=subvol=@ rw splash vt.global_cursor_default=0

Crypttab setup

Create file /etc/crypttab.initramfs with contents:

root /dev/mapper/cryptroot none timeout=180,tpm2-device=auto

Secure boot setup

Install Secure Boot:

sudo pacman -Syyu sbctl

Create Secure boot keys:

sbctl create-keys

Enroll keys

Change attributes of keys in btrfs:

sudo chattr -i /sys/firmware/efi/efivars/{PK,KEK,db}*

In the above command, if either of PK,KEK or db causes command to fail remove that from the list and run with the rest.

Now, Enroll keys along with Microsoft keys (-m):

sbctl enroll-keys -m

Generate signed unified image:

sbctl bundle -s /boot/efi/EFI/Linux/arch-linux.efi

Bootloader: SystemD Boot

Sign bootloader for Secureboot

sbctl sign -s -o /usr/lib/systemd/boot/efi/systemd-bootx64.efi.signed /usr/lib/systemd/boot/efi/systemd-bootx64.efi

Install

bootctl install

User Management

Create root password

passwd

create user USERNAME:

useradd -m -G wheel,storage,power -g users -s /bin/bash USERNAME

create password for user USERNAME:

passwd USERNAME

Don't forget to uncomment wheel line with visudo:

visudo

Search for the following line and remove the # infront of it:

%wheel ALL=(ALL:ALL) ALL

Switch user to USERNAME

sudo -u USERNAME -i

Enable services

Enable Gnome Display Manager

sudo systemctl enable gdm

Enable Network Manager

sudo systemctl enable NetworkManager

Enable Network Manager

sudo systemctl enable bluetooth

Install Aur helper

sudo pacman -Syy go
git clone https://aur.archlinux.org/yay.git
cd yay
makepkg -is
cd ..
rm -rf yay

Plymouth Setup

Install plymouth

yay -Syy plymouth-git

Install plymouth theme

yay -Syy plymouth-theme-bgrt-better-luks

Set Plymouth theme

Show installed plymouth themes:

sudo plymouth-set-default-theme -l

Set plymouth theme:

sudo plymouth-set-default-theme -R bgrt-better-luks

then logout current user to get back to root:

exit

Rerun mkinitcpio

sudo mkinitcpio -p linux

Regenerate Unified Kernel Image

sudo sbctl generate-bundles -s

Finish Install

logout of user USERNAME, exit arch-chroot, unmount and reboot:

exit
exit
umount -a
reboot

Turn on secure boot in BIOS after this. Nothing else needed for Secure Boot.

Reference

  1. https://wiki.archlinux.org/title/User:ZachHilman/Installation_-Btrfs%2B_LUKS2_%2B_Secure_Boot

  2. https://wiki.archlinux.org/title/Installation_guide

  3. https://gist.github.com/mjnaderi/28264ce68f87f52f2cabb823a503e673

  4. https://gist.github.com/martijnvermaat/76f2e24d0239470dd71050358b4d5134

  5. https://nerdstuff.org/posts/2020/2020-004_arch_linux_luks_btrfs_systemd-boot/

  6. https://github.com/Szwendacz99/Arch-install-encrypted-btrfs

  7. https://www.reddit.com/r/archlinux/comments/127fp6g/plymouthencrypt_hook_no_longer_found_after_update/

  8. https://bbs.archlinux.org/viewtopic.php?id=284741

  9. https://www.youtube.com/watch?v=QQoZwP6-Y2k

  10. https://github.com/AravindIM/nixos-dotfiles/blob/main/hosts/thinkpad/hardware-configuration.nix

  11. https://github.com/AravindIM/arch-install/blob/main/install-gnome.sh

  12. https://github.com/0xadeeb/dotFiles

  13. https://github.com/0xadeeb/NixOs-config/blob/master/hosts/hp-pavilion/hardware-configuration.nix

  14. https://bbs.archlinux.org/viewtopic.php?id=243019

  15. https://wiki.archlinux.org/title/Talk:Mkinitcpio#Improvements_for_the_Common_hooks_table_and_section_about_systemd_hook

  16. https://wiki.archlinux.org/title/Power_management/Suspend_and_hibernate

  17. https://askubuntu.com/questions/1304519/fstab-automatically-creates-mount-points

  18. https://wiki.archlinux.org/title/User:Bai-Chiang/Installation_notes

  19. https://wiki.archlinux.org/title/Unified_Extensible_Firmware_Interface/Secure_Boot

  20. https://wiki.archlinux.org/title/Unified_kernel_image

  21. https://wiki.archlinux.org/title/AUR_helpers

  22. https://linuxhint.com/btrfs-filesystem-mount-options/

  23. https://linuxconfig.org/how-to-manage-efi-boot-manager-entries-on-linux

  24. https://wiki.archlinux.org/title/dm-crypt/Encrypting_an_entire_system#Encrypted_boot_partition_(GRUB)

  25. https://git.launchpad.net/~ubuntu-core-dev/grub/+git/ubuntu/tree/debian/build-efi-images?h=debian/2.06-2ubuntu12