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----
-categories:
-- embedded
-date: 2016-01-30
-title: Installing Arch Linux ARM on a Raspberry Pi
----
-
-My cheat sheet for deploying multiple Arch Linux machines, Raspberry Pis here.
-Installs `pacserve`, `rngd` and `yaourt` in a btrfs subvolume `root`. To allow local users to poweroff, `polkit` is also installed.
-
-# Filesystem setup
-See also the [Archlinux ARM guide](http://archlinuxarm.org/platforms/armv6/raspberry-pi).
-
-Change `sdx` to `sdb`/`sdc`/…
-``` bash
-sudo fdisk /dev/sdx
-sudo mkfs.btrfs /dev/sdx2
-sudo mkfs.vfat /dev/sdx1
-mkdir -p tmp/{r,b}oot
-cd tmp
-sudo mount /dev/sdx2 root
-sudo btrfs subvolume create root/root
-sudo umount root
-```
-
-# Copying the files
-Use `ArchLinuxARM-rpi-2-latest.tar.gz` for the Raspberry Pi 2 or 3.
-``` bash
-wget http://archlinuxarm.org/os/ArchLinuxARM-rpi-latest.tar.gz
-sudo mount /dev/sdx1 boot
-sudo mount -o subvol=root,autodefrag,compress=lzo /dev/sdx2 root
-sudo su -c "bsdtar -xpf ArchLinuxARM-rpi-latest.tar.gz -C root" && sync
-sudo mv root/boot/* boot
-sudo umount boot
-sudo mount /dev/sdx1 root/boot
-```
-
-# QEMU chroot
-[Optional](https://wiki.archlinux.org/index.php/Raspberry_Pi#QEMU_chroot). You can skip this and power the Pi up instead.
-
-``` bash
-sudo cp /usr/bin/qemu-arm-static root/usr/bin
-sudo arch-chroot root /bin/bash
-```
-
-# Configuration
-``` bash
-echo "root=/dev/mmcblk0p2 rootflags=subvol=root,autodefrag,compress=lzo rw rootwait console=tty1 elevator=deadline" > /boot/cmdline.txt
-sed -i "s/gpu_mem=64/gpu_mem=16/" /boot/config.txt
-
-cat << EOF >> /boot/config.txt
-start_file=start_x.elf
-fixup_file=fixup_x.dat
-start_x=1
-EOF
-
-sed -i '/\[options\]/a CacheDir    = /var/cache/pacman/pkg/' /etc/pacman.conf
-sed -i '/\[options\]/a CleanMethod = KeepCurrent' /etc/pacman.conf
-cat << EOF >> /etc/pacman.conf
-[archlinuxfr]
-SigLevel = Never
-Server = http://repo.archlinux.fr/arm
-
-[xyne-any]
-Server = http://xyne.archlinux.ca/repos/xyne
-EOF
-```
-
-# Package installation
-``` bash
-pacman -Syu --needed pacserve git yajl rng-tools polkit archlinuxarm-keyring archlinux-keyring base-devel
-systemctl enable pacserve rngd
-echo 'RNGD_OPTS="-o /dev/random -r /dev/hwrng"' > /etc/conf.d/rngd
-echo "alarm ALL=(ALL) ALL" >> /etc/sudoers
-pacman.conf-insert_pacserve > /tmp/pacman.conf
-mv /tmp/pacman.conf /etc/pacman.conf
-su alarm
-cd
-git clone https://aur.archlinux.org/package-query.git
-cd package-query
-makepkg -s
-mv package-query*.tar.xz /tmp
-cd ..
-rm -rf package-query
-exit
-pacman -U /tmp/package-query*.tar.xz
-pacman -S yaourt
-exit
-```
-
-`sudo umount root/boot root` or `reboot`
-
-# Post installation (on the Pi)
-SSH into alarm with password alarm. root password is root, but SSH login for root is by default disabled.
-``` bash
-sudo hostnamectl set-hostname xxx
-sudo timedatectl set-timezone Yourtime/zone
-sudo vi /etc/systemd/timesyncd.conf
-sudo timedatectl set-ntp true
-sudo pacman-key --init
-passwd
-sudo passwd
-```
-
-# Troubleshooting
-Can't unmount for some reason? Use the hammer (not recommended): `sudo fuser -km mntpoint || sudo umount -l mntpoint`
-
-# Further information
-For more, see [the Arch wiki](https://wiki.archlinux.org/index.php/Raspberry_Pi).