Install

https://wiki.archlinux.org/title/installation_guide#Verify_the_boot_mode

# sshd started by default, `passwd root` to login
ls /sys/firmware/efi/efivars
vi /etc/pacman.d/mirrorlist
pacstrap -K /mnt base linux linux-firmware
genfstab -U /mnt >> /mnt/etc/fstab
arch-chroot /mnt