variant: fcos
version: 1.4.0

storage:
  files:
  - path: /etc/ignition/fix-hybrid-mbr.sh
    mode: 0755
    contents:
      inline: |-
        #!/bin/sh

        set -ex
        
        bootdev=$(awk '$5=="/boot"{print $10}' /proc/1/mountinfo)
        sysdev=$(readlink -e /sys/class/block/${bootdev##*/})
        sysdev_parent=${sysdev%/*}
        disk=/dev/${sysdev_parent##*/}
        
        sgdisk -h 2:EE "${disk}"
        echo type=0c,bootable | sfdisk -Y mbr -N 1 "${disk}"

systemd:
  units:
  - name: fix-hybrid-mbr.service
    contents: |-
      [Unit]
      Description=Fix Hybrid MBR for Raspberry Pi 2/3
      ConditionFirstBoot=yes
      
      [Service]
      Type=oneshot
      ExecStart=/etc/ignition/fix-hybrid-mbr.sh
      
      [Install]
      WantedBy=basic.target
    enabled: true