variant: fcos
version: 1.4.0
boot_device:
  mirror:
    devices:
      - /dev/sda
      - /dev/sdb
storage:
  disks:
    - # The link to the block device the OS was booted from.
      device: /dev/disk/by-id/coreos-boot-disk
      # We do not want to wipe the partition table since this is the primary
      # device.
      wipe_table: false
      partitions:
        - number: 4
          label: root
          size_mib: 81920
          resize: true