create archlinux installation media

create_arch_media.sh

#!/bin/bash

set -e

# https://wiki.archlinux.org/index.php/USB_flash_installation_medium#Using_manual_formatting
# https://unix.stackexchange.com/questions/38164/create-partition-aligned-using-parted/49274#49274
# https://wiki.archlinux.org/index.php/Parted
# https://wiki.archlinux.org/index.php/Syslinux#Manual_install

# Preparation:

# download iso from https://www.archlinux.org/download/

# pacman -S parted syslinux mtools
# mkdir -p ./iso
# mount -o loop archlinux-2020.07.01-x86_64.iso ./iso

# change the following if needed
PART_LABEL=ARCH_202007
ISO_FILE=archlinux-2020.07.01-x86_64.iso

if ! [ -b "$1" ]; then
  echo "$1 is not a block device"
  exit 255
fi
echo "USB: $1"

echo parted -s -a optimal $1 mktable msdos mkpart primary fat32 0% 100% set 1 boot on
parted -s -a optimal $1 mktable msdos mkpart primary fat32 0% 100% set 1 boot on

echo mkfs.fat -F32 "$1"1
mkfs.fat -F32 "$1"1

echo fatlabel "$1"1 $PART_LABEL
fatlabel "$1"1 $PART_LABEL

echo mkdir -p ."$1"1
mkdir -p ."$1"1

echo mount "$1"1 ."$1"1/
mount "$1"1 ."$1"1/

echo cp -a iso/* ."$1"1/
cp -a iso/* ."$1"1/

echo cp $ISO_FILE ."$1"1/
cp $ISO_FILE ."$1"1/

echo "(sync)" umount ."$1"1/
umount ."$1"1/

echo syslinux --directory /arch/boot/syslinux --install "$1"1
syslinux --directory /arch/boot/syslinux --install "$1"1

echo dd bs=440 count=1 conv=notrunc if=/usr/lib/syslinux/bios/mbr.bin of="$1"
dd bs=440 count=1 conv=notrunc if=/usr/lib/syslinux/bios/mbr.bin of="$1"