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1. Please prepare an SD card with a 512MB or larger capacity.

2. Connect the SD card to ATDE. For details, refer to「Using Removable Devices」.

3. Unmount the SD card if it is currently mounted.

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

4. Write the installation disk image to the SD card.

   [PC ~]$sudo dd if=install_disk_sd_[version].img of=/dev/sdb bs=4M
   94+1 records input
   94+1 records output
   397410304 bytes (397 MB) copied, 45.8441 seconds、 8.7 MB/sec
   [PC ~]$sync

1. Make sure the Armadillo is powered off. If the power is on, turn it off. Also, be sure to remove the battery if one is connected to 「CON13 RTC Backup Interface 1」.

2. Check the slide switch of the USB serial converter. Make sure that the slide switch is set to side "1" of 図3.8「Slide Switch Configuration」.

3. Use the installation disk to perform an SD boot. Insert the installation disk into the SD slot (CON4) and set JP1 to short.

4. When the Armadillo is powered on while holding User Switch 1 down, the bootloader will start up from the SD card and the following log will be displayed. When the log is displayed, release User Switch 1. For the location of User Switch 1, see 「Armadillo-IoT Gateway Exterior」.

   U-Boot 2014.04-at2 (Jun 12 2016 - 17:47:04)
   
   CPU:   Freescale i.MX7D rev1.1 at 792 MHz
   CPU:   Temperature: can't get valid data!
   Reset cause: POR
   I2C:   ready
   DRAM:  512 MiB
   MMC:   FSL_SDHC: 0, FSL_SDHC: 1
   In:    serial
   Out:   serial
   Err:   serial
   Found PFUZE300! deviceid 0x30, revid 0x11
   Board Type: Armadillo-IoT G3(0a000000)
   Revison: 0002
   S/N: 2000
   DRAM: 00001d05
   XTAL: 00
   Net:   FEC0
   Normal Boot
   =>

5. When the "boot" command is executed as follows, the installation starts and the eMMC and QSPI are rewritten automatically.

   => boot
   mmc0 is current device
   mmc0 is current device
   reading boot.scr
   ** Unable to read file boot.scr **
   reading uImage
   9301216 bytes read in 501 ms (17.7 MiB/s)
   Booting from mmc ...
   reading armadillo_iotg_g3.dtb
   52708 bytes read in 20 ms (2.5 MiB/s)
   ## Booting kernel from Legacy Image at 80800000 ...
      Image Name:   Linux-3.14.38-at2
      Image Type:   ARM Linux Kernel Image (uncompressed)
      Data Size:    9301152 Bytes = 8.9 MiB
      Load Address: 80008000
      Entry Point:  80008000
      Verifying Checksum ... OK
   ## Flattened Device Tree blob at 83000000
      Booting using the fdt blob at 0x83000000
      Loading Kernel Image ... OK
      Using Device Tree in place at 83000000, end 8300fde3
   
   Starting kernel ...
   : (abbreviated)
   *+*+* Recovery Start!! *+*+*

6. The following message will be displayed and installation is complete once automatically halted.

   *+*+* Recovery Completed!! *+*+*
   
   System is going down for system reboot now.
   
   Starting local stop scripts.
   Syncing all filesystems: done
   Unmounting all filesystems: done
   The system is going down NOW!
   Sent SIGTERM to all processes
   Sent SIGKILL to all processes
   Requesting system halt
   reboot: System halted
   

   After installation is complete, please set JP1 to open.

手順8.1 Rewriting the Root File System on eMMC

1. An SD boot must be performed in order to rewrite the root file system on eMMC. For details on how to create a boot disk and execute an SD boot, see 9章Utilizing SD Booting.

2. Prepare the Debian GNU/Linux root file system archive.

   [armadillo ~]#ls
   debian-jessie-armhf_aiotg-g3_[version].tar.gz

3. Recreate the root file system within the second partition of the eMMC.

   [armadillo ~]# mkfs.ext4 /dev/mmcblk2p2  
   mke2fs 1.42.12 (29-Aug-2014)
   /dev/mmcblk2p2 contains a ext4 file system
   ▸-last mounted on /root on Thu Jan  1 09:00:07 1970
   Proceed anyway? (y,n) y  
   ...(abbreviated)...
   
   [armadillo ~]# mount -t ext4 /dev/mmcblk2p2 /mnt  
   [armadillo ~]# tar zxf debian-jessie-armhf_aiotg-g3l_[version].tar.gz -C /mnt  
   [armadillo ~]# umount /mnt  

   ▸-

   	Recreate the file system on the second partition of eMMC.
   	Enter y and then ENTER.
   	Mount the second partition of the eMMC to the /mnt/ directory.
   	Extract the root file system archive to the /mnt/ directory.
   	Unmount the second partition of the eMMC mounted ot the　/mnt/ directory.