My setup: Lenovo X1 Carbon 120GB SSD (GPT-UEFI)
Boot into the arch install media and run the following commands.
wifi-menu (for wifi)
pacman -Sy reflector git
reflector --verbose -l 100 -p http -p https --sort rate --save /etc/pacman.d/mirrorlist
git clone https://github.com/archbyte/install
/bin/bash install/arch
When in chroot, run the below commands.
./chroot
exit
reboot
Login by entering your username and password.
./de
After reboot, login and enter the below commands.
./post