Howto install archlinux arm

download image

download raspbian lite image:

wget https://downloads.raspberrypi.org/raspios_lite_armhf/images/raspios_lite_armhf-2021-11-08/2021-10-30-raspios-bullseye-armhf-lite.zip

download archlinuxarm image for raspberrypi 4:

wget http://os.archlinuxarm.org/os/ArchLinuxARM-rpi-aarch64-latest.tar.gz

umcompress rasbian lite image:

unzip 2021-10-30-raspios-bullseye-armhf-lite.zip

rename rasbian lite image:

mv 2021-10-30-raspios-bullseye-armhf-lite.img $(date +%F)-archlinuxarm.img

install multipath-tools:

pacman -S multipath-tools

mount the image with kpart:

kpart -va $(date +%F)-archlinuxarm.img

mount partitions:

mkdir /mnt/archarm
mount /dev/mapper/loop0p2 /mnt/archarm
mount /dev/mapper/loop0p1 /mnt/archarm/boot

remove all content:

cd /mnt/archarm
rm -rf *

copy archlinuxarm image content to mountpoint:

tar xvf ArchLinuxARM-rpi-aarch64-latest.tar.gz -C /mnt/archarm/
sync

update /etc/fstab for the different sd block device compared to the raspberrypi 3:

sed -i 's/mmcblk0/mmcblk1/g' /mnt/archarm/etc/fstab

umount partitions:

umount /mnt/archarm/boot
umount /mnt/archarm
kpartx -d /dev/loop0
losetup -d /dev/loop0

connect sd card to your computer and detect drive letter:

dmesg 
fdisk -l /dev/sde

write image to sd card:

dd if=$(date +%F)-archlinuxarm.img of=/dev/sde