1. Archinstall

Write the Arch Linux ISO to the whole USB disk. Use balenaEtcher on Mac/Windows or Caligula on Linux. The selected device will be completely overwritten.

Safest method: interactive disk selection

caligula burn -z none ~/Downloads/archlinux-*.iso

Then, boot from the USB stick.

If you need Wi-Fi

Before installation

loadkeys fi # If you need some other key layouts
localectl list-keymaps # Other keymaps

iwctl
device list
station wlan0 scan
station wlan0 get-networks
station wlan0 connect "WIFI_NAME"
exit

ping google.com
# Ctrl+C

archinstall

Use Archinstall for only what is needed to boot into GUI. In Archinstall select:

Locales: put your keymap. en_DK.UTF-8 is perfect locale language for Finnish people: 2026-07-16 ftw!
Mirrors -> Select regions -> /Spain or other, Enter, Space
Disk configuration -> defaults
Authentication: root and sudo user
Profile: minimal
Applications: bluetooth, pipewire-audio
Network: network manager (iwd backend) # Because of Wi-Fi
Additional packages: git
Timezone /europe/madrid # For me
Install

When finished-> Reboot system

2. GIT clone the repo

If you use Wi-Fi, connect to it first

nmtui

After that, clone:

git clone https://github.com/gearnoodle/archlab

Feel free to remove archlab folder after the install.

3. Install

cd archlab
./install.sh

First launch

labwc

Enjoy!