Installs the FreeBSD Bootloader on all efi an freebsd-boot partitions. When installing the freebsd-boot partition it also installs the MBR. Without --commit nothings happens, only the commands are shown.

install_freebsd_bootloaders.sh

#!/bin/sh

emit() {
  if [ "$arg_commit" = "1" ]; then
    #echo " | $@"
    echo " | $@"
    $@ ## << make this the main command or run with `eval $@` 
  else
    echo " | $@"
    (exit 0)
  fi
}

update_efi_partition() {
  name="$1"
  index="$2"
  mountpoint="/boot/efi"

  echo "* Update efi ${name}p${index} (device ${name})"
  emit umount $mountpoint
  emit mount -t msdosfs "/dev/${name}p${index}" $mountpoint
  if [ $? -ne 0 ]; then
    echo " ** ERROR - Cannot mount the efi partition"
    echo " ** please check if the $mountpoint can be mounted"
    exit
  fi

  emit mkdir -p $mountpoint/efi/boot
  emit cp -p $mountpoint/efi/boot/BOOTx64.efi $mountpoint/efi/boot/BOOTx64.efi.bak
  emit cp -p /boot/loader.efi $mountpoint/efi/boot/BOOTx64.efi
  emit umount $mountpoint
  echo ""
}

update_boot_partition() {
  name="$1"
  index="$2"
  echo "* Update freebsd-boot $name $index"
  emit gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i $index $name
  echo ""
}

# =>        40  3907029088  nda0  GPT  (1.8T)]
#           40      532480     1  efi  (260M)]
#       532520        1024     2  freebsd-boot  (512K)]
#       533544         984        - free -  (492K)]
#       534528    16777216     3  freebsd-swap  (8.0G)]
#     17311744  3889717248     4  freebsd-zfs  (1.8T)]
#   3907028992         136        - free -  (68K)]
# =>        40  3907029088  ada0  GPT  (1.8T)]
#           40      532480     1  efi  (260M)]
#       532520        1024     2  freebsd-boot  (512K)]
#       533544         984        - free -  (492K)]
#       534528    16777216     3  freebsd-swap  (8.0G)]
#     17311744  3889717248     4  freebsd-zfs  (1.8T)]
#   3907028992         136        - free -  (68K)]
# =>        40  3907029088  da0  GPT  (1.8T)]
#           40      532480    1  efi  (260M)]
#       532520        1024    2  freebsd-boot  (512K)]
#       533544         984       - free -  (492K)]
#       534528    16777216    3  freebsd-swap  (8.0G)]
#     17311744  3889717248    4  freebsd-zfs  (1.8T)]
#   3907028992         136       - free -  (68K)
update_partitions() {
  old_ifs=$IFS
  IFS='
'
  device=""
  for line in $(gpart show $arg_device); do
    IFS=' '

    set -- $line
    #echo "[$1, $2, $3, $4, $5, $6]"
    case "$1" in
       # [=>, 40, 3907029088, ada0, GPT, (1.8T)]
       "=>")
          device="$4"
          ;;

       # [40, 532480, 1, efi, (260M), ]
       *)
        part_type="$4"
        part_index="$3"
        case "$part_type" in
         "efi")
              update_efi_partition $device $part_index
              ;;
         "freebsd-boot")
              update_boot_partition $device $part_index
              ;;
        esac
          ;;
    esac
  done
  IFS=$old_ifs
}

show_partitions() {
  echo "Current Partition Information $arg_device"
  echo "------------------------------------------"
  gpart show $arg_device
  echo ""
}

usage() {
  echo "Usage: $0 [--commit] [--all] device..."
  echo ""
  echo "Installs the FreeBSD Bootloader on all efi an freebsd-boot partitions."
  echo "When installing the freebsd-boot partition it also installs the MBR."
  echo "Without --commit nothings happens, only the commands are shown."
  echo ""
  echo "--all: use for all devices"
  echo "--commit: apply the changes to the device(s)"
  echo "--help: show this usage information"
  echo ""
}


arg_commit=0
arg_all=0
arg_device=''

# Loop through all provided arguments
while [ $# -gt 0 ]; do
  case "$1" in
    --commit)
      arg_commit="1"
      shift
      ;;
    --all)
      arg_all="1"
      shift
      ;;
    --help)
      usage
      exit 0
      ;;
    #--) # End of options
    #  shift
    #  break
    #  ;;
    *) # Unknown option
      # when it starts with a dash show usage information
      if [ "${1#-}" != "$1" ]; then
        echo "Error: Unknown option: $1"
        echo ""
        usage
        exit 1
      else
        if [ ! -z "$arg_device" ]; then
          echo "Error: Only one (or --all) device is support"
          echo ""
          usage
          exit 1
        fi
        arg_device="$1"
        shift
      fi
      ;;
  esac
done

# make sure a device or --all is selected
if ! [ "$arg_all" == "1" ] ; then
  if [ -z "$arg_device" ]; then
    echo "Error: Please specify a device or use the option --all"
    echo ""
    usage
    exit 1
  fi
fi


if [ $arg_commit == "1" ]; then
  echo "Updating Partitions"
  echo "-------------------"
  echo
  show_partitions
  update_partitions
  echo ""
  echo "Done!"
else
  echo "Update the following Actions?"
  echo "-----------------------------"
  echo
  show_partitions
  update_partitions
  echo ""
  echo "Please run with --commit argument to realy write the partition!"
fi

This script fetches the partition info for all disks and

• it installs gptzfsboot on every freebsd-boot partition (and writes mbr)
• it installs the /boot/loader.efi on every efi partition

Usage:

# view the actions that the script is going to take:
install_bootloader.sh

# check these actions, when ok run with the commit option
install_bootloader.sh --commit

New version support device name on the command line.

Usage: ./install_bootloader.sh [--commit] [--all] device...

Installs the FreeBSD Bootloader on all efi an freebsd-boot partitions.
When installing the freebsd-boot partition it also installs the MBR.
Without --commit nothings happens, only the commands are shown.

--all: use for all devices
--commit: apply the changes to the device(s)
--help: show this usage information