installing arch.md

1. verify the boot mode: ls /sys/firmware/efi/efivars
2. verify internet ping archlinux.org
3. update system clock timedatectl set-ntp true
4. wipe the disk:
   1. cryptsetup open --type plain -d /dev/urandom /dev/sda to_be_wiped
   2. dd if=/dev/zero of=/dev/mapper/to_be_wiped status=progress
   3. cryptsetup close to_be_wiped
5. partition the disk, with cfdisk:
   1. EFI/boot partition 512M (sda1), partition type EF00 on gdisk
   2. root partition, rest of the space, with LVM format (sda2)
6. create LVM volumes:
   1. list capable devices lvmdiskscan
   2. create physical volume pvcreate /dev/sda2
   3. create volume groups vgcreate MyVol /dev/sda2
   4. create logical volumes lvcreate -L 8G MyVol -n swap and lvcreate -L 100%FREE MyVol -n root
7. format:
   1. format boot mkfs.fat -F32 /dev/sda1
   2. format root mkfs.ext4 /dev/MyVol/root
   3. mkswap /dev/MyVol/swap
   4. mount /dev/MyVol/root /mnt & swapon /dev/MyVol/swap
   5. mkdir /mnt/boot & mount /dev/sda1 /mnt/boot
8. installation: pacstrap /mnt base
9. Fstab genfstab -L /mnt >> /mnt/etc/fstab