[PC ~]$ sudo apt-get update && sudo apt-get install u-boot-tools
[PC ~]$ tar xf make_install_disk_image-[version].tar.gz
[PC ~]$ cd make_install_disk_image
[PC ~/make_install_disk_image]$ 

[PC ~/make_install_disk_image]$ sudo ./build.sh
Install Disk Image Build Script v1.3.0

Usage:
  sudo ./build.sh BOARD UBOOT KERNEL DTB USERLAND [BOOTSCR]

  BOARD: x1/iotg3/iotg3_m1/iotg3_w2/iotg3l/degugw_iotg3_m1
  UBOOT: u-boot image
  KERNEL: uImage
  DTB: Device Tree Blob image
  USERLAND: Debian userland archive
  BOOTSCR: u-boot script

[PC ~/make_install_disk_image]$ sudo ./build.sh iotg3l u-boot-x1-[version].bin uImage-x1-[version] armadillo_iotg_g3l-[version].dtb debian-buster-armhf_aiotg3l_[version].tar.gz
Image Name:
Created:      Thu Nov 15 15:54:00 2018
Image Type:   ARM Linux Script (uncompressed)
Data Size:    167 Bytes = 0.16 kB = 0.00 MB
Load Address: 00000000
Entry Point:  00000000
Contents:
   Image 0: 159 Bytes = 0.16 kB = 0.00 MB
0+0 レコード入力
0+0 レコード出力
0 bytes copied, 6.6523e-05 s, 0.0 kB/s

Welcome to fdisk (util-linux 2.29.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Device does not contain a recognized partition table.
Created a new DOS disklabel with disk identifier 0xf7a08a85.

Command (m for help): Partition type
   p   primary (0 primary, 0 extended, 4 free)
   e   extended (container for logical partitions)
Select (default p): Partition number (1-4, default 1): First sector (2048-854015, default 2048): Last sector, +sectors or +size{K,M,G,T,P} (2048-854015, default 854015):
Created a new partition 1 of type 'Linux' and of size 13 MiB.

Command (m for help): Partition type
   p   primary (1 primary, 0 extended, 3 free)
   e   extended (container for logical partitions)
Select (default p): Partition number (2-4, default 2): First sector (28672-854015, default 28672): Last sector, +sectors or +size{K,M,G,T,P} (28672-854015, default 854015):
Created a new partition 2 of type 'Linux' and of size 403 MiB.

Command (m for help): Partition number (1,2, default 2): Partition type (type L to list all types):
Changed type of partition 'Linux' to 'W95 FAT32'.

Command (m for help): The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.

mkfs.fat 4.1 (2017-01-24)
mke2fs 1.43.4 (31-Jan-2017)
Discarding device blocks: done
Creating filesystem with 412672 1k blocks and 103224 inodes
Filesystem UUID: 098c113e-ba13-4d98-bd23-e23360f0cf7c
Superblock backups stored on blocks:
    8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409

Allocating group tables: done
Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done

368+1 レコード入力
368+1 レコード出力
376936 bytes (377 kB, 368 KiB) copied, 0.0378821 s, 10.0 MB/s
[PC ~/make_install_disk_image]$ 

[PC ~/make_install_disk_image]$ ls install_disk_sd_*.img
install_disk_sd_[version]_[model].img

[PC ~]$ mount
(省略)
/dev/sdb1 on /media/atmark/B18A-3218 type vfat (rw,nosuid,nodev,relatime,uid=1000,gid=1000,fmask=0022,dmask=0077,codepage=437,iocharset=utf8,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks2)
[PC ~]$ sudo umount /dev/sdb1

[PC ~]$ sudo dd if=install_disk_sd_[version].img of=/dev/sdb bs=4M
94+1 レコード入力
94+1 レコード出力
397410304 バイト (397 MB) コピーされました、 45.8441 秒、 8.7 MB/秒
[PC ~]$ sync