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Arch Linux EFI installation (i3 & disk encryption)

Create a bootable USB stick

  1. Download the ISO at https://archlinux.org/download/.
  2. Verify the integrity of the ISO using a checksum.
  3. Burn the ISO to a USB Stick.

Installation

Keyboard & fonts

Setup the keymap :

root@archiso ~ # localectl list-keymaps | grep fr
fr
fr_CH
fr_CH-latin1
...
root@archiso ~ # loadkeys fr

Zoom the font (optional) :

root@archiso ~ # setfont ter-120n

Wifi connection

Connect to wifi (you can skip this step if you are using an internet cable) :

root@archiso ~ # iwctl
[iwd]# device list
                           Devices
   Name
   wlan0
[iwd]# station wlan0 scan
[iwd]# station wlan0 get-networks
                           Available networks
   Network name
   wifi-13975935
[iwd]# station wlan0 connect wifi-13975935
Type the network passphrase for wifi-13975935 psk.
Passphrase: ****************
[iwd]# exit
root@archiso ~ # ip a
...
4: wlan0: ...

Clock

Set the system clock :

root@archiso ~ # timedatectl set-ntp true

Mirrors

Use the fastest mirror :

root@archiso ~ # reflector -c France -a 6 --sort rate --save /etc/pacman.d/mirrorlist

Update package databases :

root@archiso ~ # pacman -Syy

Partitions

List all the disks (computer disk : nvme0n1) :

root@archiso ~ # lsblk
NAME    ...   MOUNTPOINTS
loop0   ...   /run/archiso/airootfs
sda     ...   /run/archiso/bootmnt
nvme0n1 ...

Partitions :

  1. EFI system partition (size : 260M, code: ef00)
  2. Linux swap (size: 4G, code: 8200)
  3. Linux filesystem (size: the rest of the disk, code: 8300)
root@archiso ~ # gdisk /dev/nvme0n1

Command (? for help): n
Partition number (1-128, default 1): <press enter to use default>
First sector : <press enter to use default>
Last sector : +260M
Hex code or GUID : ef00

Command (? for help): n
Partition number (1-128, default 1): <press enter to use default>
First sector : <press enter to use default>
Last sector : +4G
Hex code or GUID : 8200

Command (? for help): n
Partition number (1-128, default 1): <press enter to use default>
First sector : <press enter to use default>
Last sector : <press enter to use default>
Hex code or GUID : <press enter to use default>

Command (? for help): w

Do you want to proceed? (Y/N): Y
The operation has completed successfully.

Format partitions :

root@archiso ~ # lsblk
NAME    ...   MOUNTPOINTS
loop0   ...   /run/archiso/airootfs
sda     ...   /run/archiso/bootmnt
nvme0n1
-> nvme0n1p1 260M part
-> nvme0n1p1   4G part
-> nvme0n1p1 500G part

Fat 32 for EFI :

root@archiso ~ # mkfs.fat -F32 /dev/nvme0n1p1
mkfs.fat 4.2 (2021-01-32)

Swap :

root@archiso ~ # mkswap /dev/nvme0n1p2
Setting up ...
root@archiso ~ # swapon /dev/nvme0n1p2

Encryption of linux FS (mapper name : cryptlinuxfs, use whatever you want):

root@archiso ~ # cryptsetup -y -v luksFormat /dev/nvme0n1p3

Are you sure ? YES
Enter passphrase: ...
Verify passphrase: ...
Command successful.
root@archiso ~ # cryptsetup open /dev/nvme0n1p3 cryptlinuxfs
cryptsetup open
root@archiso ~ # mkfs.ext4 /dev/mapper/cryptlinuxfs
...
root@archiso ~ # mount /dev/mapper/cryptlinuxfs /mnt
root@archiso ~ # mkdir /mnt/boot
root@archiso ~ # mount /dev/nvme0n1p1 /mnt/boot

Install essential packages (you can replace intel-ucode by amd-ucode) :

root@archiso ~ # pacstrap /mnt base linux linix-firmware vim intel-ucode

Configure the system

Generate the fstab file :

root@archiso ~ # genfstab -U >> /mnt/etc/fstab

root@archiso ~ # arch-root /mnt
[root@archiso /]# 

Timezone and clock :

[root@archiso /]# timedatectl list-timezones | grep Paris
Europe/Paris
[root@archiso /]# ln -sf /usr/share/zoneinfo/Europe/paris /etc/localtime
[root@archiso /]# hwclock --systohc

Locale :

[root@archiso /]# sed -i "s/#en_US.UTF-8/en_US.UTF-8/g" /etc/locale.gen
[root@archiso /]# locale-gen
Generating locales ...
[root@archiso /]# echo "LANG=en_US.UTF-8" > /etc/locale.conf
[root@archiso /]# echo "KEYMAP=fr" > /etc/vconsole.conf

Hostname :

[root@archiso /]# echo "arch" > /etc/hostname
[root@archiso /]# echo "127.0.0.1 localhost arch arch.localdomain" >> /etc/hosts
[root@archiso /]# echo "::1 localhost" >> /etc/hosts

root passwd :

[root@archiso /]# passwd
New password:
Retype new password:

Install usefull packages :

[root@archiso /]# pacmam -S grub efibootmgr networkmanager network-manager-applet dialog wpa_supplicant mtools dosfstools base-devel linux-headers bluez bluez-utils cups xdg-utils xdg-user-dirs alsa-utils pulseaudio pulseaudio-bluetooth reflector bash-completion

Add keymap and encrypt modules :

[root@archiso /]# vim /etc/mkinitcpio.conf
...
HOOKS=(base udev autodetect keyboard keymap modconf block encrypt filesystems fsck)
...
[root@archiso /]# mkinitcpio -p linux

Install and configure grub :

[root@archiso /]# grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=GRUB
[root@archiso /]# grub-mkconfig -o /boot/grub/grub.cfg
[root@archiso /]# blkid | grep crypto_LUKS
/dev/nvme0n1p3: UUID="89fdXXX" ...
[root@archiso /]# vim /etc/default/grub
...
GRUB_CMDLINE_LINUX="cryptdevice=UUID=89fdXXX:cryptlinuxfs root=/dev/mapper/cryptlinuxfs"
...
[root@archiso /]# grub-mkconfig -o /boot/grub/grub.cfg

Enable network, bluetooth and cups services :

[root@archiso /]# systemctl enable NetworkManager
[root@archiso /]# systemctl enable bluetooth
[root@archiso /]# systemctl enable cups

Create a user :

[root@archiso /]# useraddd -mG wheel xanhacks
[root@archiso /]# passwd xanhacks
New password:
Retype new password:
[root@archiso /]# export EDITOR=vim
[root@archiso /]# visudo
...
%wheel ALL=(ALL) ALL
...

Exit and reboot :

[root@archiso /]# exit
root@archiso ~ # umount -a
root@archiso ~ # shutdown now

Remove the USB key and add boot option to the grub.

Connect to a WIFI :

[xanhacks@arch ~]$ sudo nmtui

Set the clock :

[xanhacks@arch ~]$ sudo timedatectl set-ntp true
[xanhacks@arch ~]$ sudo hwclock --systohc

Setup mirrolist to the fatest mirrors.

[xanhacks@arch ~]$ sudo reflector -c France -a 6 --sort rate --save /etc/pacman.d/mirrorlist
[xanhacks@arch ~]$ sudo pacman -Syy
[xanhacks@arch ~]$ sudo systemctl enable reflector.timer 

Ressources

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