echo ',,,*;'|sfdisk /dev/vda
mount /dev/vda1 /mnt/
pacstrap /mnt base
genfstab -U /mnt >> /mnt/etc/fstab
arch-chroot /mnt
pacman -S --noconfirm grub
grub-mkconfig -o /boot/grub/grub.cfg
exit
grub-install --root-directory=/mnt /dev/vda