====== Troubleshooting eLib Box ======
===== Ethernet not working =====
====Raspberry Pi 3 with Raspbian Stretch====
  * confirm
<code>
ifconfig -a
</code>
may include something like this
<code>
eth0: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether b8:27:eb:2c:94:19  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
</code>
 or do
<code>
sudo service dhcpcd status
</code>
and you'll have something like this
<code>
systemd[1]: Starting dhcpcd on all interfaces...
dhcpcd[330]: Not running dhcpcd because /etc/network/interfaces
dhcpcd[330]: defines some interfaces that will use a
dhcpcd[330]: DHCP client or static address
systemd[1]: dhcpcd.service: Control process exited, code=exited status=6
systemd[1]: Failed to start dhcpcd on all interfaces.
systemd[1]: dhcpcd.service: Unit entered failed state.
systemd[1]: dhcpcd.service: Failed with result 'exit-code'.
</code>
  * inject
<code>
ifconfig eth0 192.168.1.66 <or some appropriate number on the dhcp network>
</code>
  * adjust dhcp via /etc/dhcpcd.conf
<code>
static domain_name_servers=172.24.1.1 192.168.1.1
</code>
Or via /etc/dhcp/dhclient.conf with this entry
<code>
option domain-name-servers 172.24.1.1, 192.168.1.1, 8.8.8.8
</code>
Adjust the latter according to the appropriate number for the eth0 network.
  * confirm 
<code>
hostname -I
</code>
\\
===== Raspberry Pi 3 Model B+ does not boot =====
If these conditions obtain:
  * booting for the first time on this hardware
  * using the Raspian OS upgraded on Raspberry Pi 3 Model B (without the +)
then it's likely that the boot disk doesn't contain the requisite firmware. So upgrade NOOBS.
  * Download [[http://downloads.raspberrypi.org/NOOBS/images/NOOBS-2018-03-14/NOOBS_v2_7_0.zip|this NOOBS version]]
  * mount 1 partition of the SD card
<code>
sudo mkdir -p /media/pi/MMC_P1
sudo mount -t vfat /dev/mmcblk0p1 /media/pi/MMC_P1
</code>
  * delete contents of partition 1
<code>
sudo find /media/pi/MMC_P1 -mindepth 1 -delete
</code>
  * unzip NOOBS into partition 1
<code>
sudo unzip /home/pi/NOOBS_v2_7_0.zip -d /media/pi/MMC_P1
</code>
  * remove //runinstaller//
  * sudo nano /media/pi/MMC_P1/recovery.cmdline
With //runinstaller// removed, the line should look like this
<code>
quiet ramdisk_size=32768 root=/dev/ram0 init=/init vt.cur_default=1 elevator=deadline
</code>
  * shutdown
\\
\\
==== References ====
  * [[https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=212452|"Update NOOBS without Re-Installing It (When Your Raspberry Pi 3B+ Will Not Boot!)"]]
  * [[https://www.raspberrypi.org/forums/viewtopic.php?t=209638|Using an SD card from PI 3 MODEL B in PI 3 MODEL B+]]