Arch instalation, the Every Possibile Way (TM) (MBR-BIOS / GPT-EFI)

Took me a while, but I made it, once. Took few hours to test and reinstall a few times, just to be sure that it - in fact - really works.

Common

loadkeys slovene

# EFI check: if OK (list exists), boot == EFI.
ls /sys/firmware/efi/efivars

dhcpcd
ip addr list
timedatectl set-ntp true

MBR, BIOS

cfdisk
# MBR
# /dev/vda1: 9G - type Linux, BOOTABLE
# /dev/vda2: 1023M - type Linux Swap
mkfs.ext4 /dev/vda1
mkswap /dev/vda2
swapon /dev/vda2
mount /dev/vda1 /mnt

EFI, GPT

cfdisk
# GPT
# /dev/vda1: 512M - type EFI System
# /dev/vda2: 8G - type Linux Root (X86-64)
# /dev/vda2: 1.5G - type Linux Swap
mkfs.ext4 /dev/vda2
mkswap /dev/vda3
swapon /dev/vda3
mount /dev/vda2 /mnt

Common

pacman -Sy
pacman -S archlinux-keyring
pacstrap /mnt base linux linux-firmware
genfstab -U /mnt >> /mnt/etc/fstab
arch-chroot /mnt
pacman -S vim curl htop wget tmux dhcpcd grub lolcat cowsay neofetch zsh zsh-completions
ln -sf /usr/share/zoneinfo/Europe/Ljubljana /etc/localtime
hwclock --systohc
sed -i '/^#sl_SI.UTF-8/s/^#//' /etc/locale.gen
sed -i '/^#en_US.UTF-8/s/^#//' /etc/locale.gen
locale-gen
vim /etc/locale.conf
	LANG=en_US.UTF-8
	LC_ALL=en_US.UTF-8
	LANGUAGE=en_US.UTF-8
	:wq

echo "KEYMAP=slovene" > /etc/vconsole.conf
echo "cassandra" > /etc/hostname
vim /etc/hosts
	127.0.0.1	localhost
	::1		localhost
	127.0.1.1	cassandra.localdomain	cassandra
	:wq

systemctl enable dhcpcd

MBR

grub-install /dev/vda
grub-mkconfig -o /boot/grub/grub.cfg

EFI

pacman -Sy efibootmgr
grub-install --target=x86_64-efi --efi-directory /efi/ --bootloader-id=GRUB
grub-mkconfig -o /boot/grub/grub.cfg

Common

passwd

useradd -m user -s /usr/bin/zsh
passwd user

exit
umount -R /mnt
reboot

All credits due: the Arch Wiki Allmighty(TM)