Raspberry Pi Guide

Before setting up Raspberry Pi, check requirements here.

1. UPS Device

Connect the UPS to the power supply and let it charge.

2. Connect the Modem to the UPS and Set it up

Plug in the modem, the swith and the Raspberry into the UPS and access the Modem. Later we need to set up a fixed IP address and port forwarding (TCP 6000/9000/9500) for the Rasperry.

3. Prepare the Raspberry

3.1. Install Heatsinker on Raspberry

3.2. Install Fan

3.3. Connect Mini HDMI -> HDMI cable (if you like, otherwise you can use SSH)

3.4. Connect the keyboard (if you like, otherwise you can use SSH)

3.5. Connect Ethernet

3.6. Install Ubuntu Server 20.04 LTS on MircoSD and on SSD. Click here for instructions

3.7. Start the UPS Power for the Raspberry

4. Update Raspberry Pi

4.1. Access via Powershell, Terminal or directly via Keyboard and Monitor

ssh username@ip address

4.2. Login: ubuntu / Password: ubuntu

For security reasons Linux requires to change the default ubuntu password.

4.3. Update & Upgrade

sudo apt update && sudo apt upgrade

During update we can set up a static IP on the Modem and set up Port forwarding.

4.4. Restart

sudo reboot

5. Install SSD

Code is adapted from an Instruction, check here if you need further information’s.

5.1. Download Eeprom

sudo apt install rpi-eeprom

5.2. Restart

sudo reboot

5.3. Connect the hard disk and check


5.4. Read out the SSD ID via and write it down

sudo lsusb

5.5. Mount the hard disk

 sudo mkdir /mnt/boot
 sudo mkdir /mnt/writable
 sudo mount /dev/sda1 /mnt/boot
 sudo mount /dev/sda2 /mnt/writable

5.6. Check again with point 5.3 if mount has worked

5.7. Automatically boot from SSD using this script

 sudo curl https://raw.githubusercontent.com/TheRemote/Ubuntu-Server-raspi4-unofficial/master/BootFix.sh | sudo bash
 sudo umount /mnt/boot
 sudo umount /mnt/writable
 sudo shutdown now

5.8. Create Quirks driver

In point 5.4. the SSD ID was read out via sudo lsusb xxxx:xxxx Now connect the hard disk to a computer and add in /boot/firmware/cmdline.txt “usb-storage.quirks=xxxx:xxxx:u” in the first place, without the quotation marks and save. For example for the Samung T7, usb-storage.quirks=04e8:4001:u

5.9. Remove the MicroSD and boot from SSD

Now it should start from the SSD, let it around 20 Minutes so settle down everything, special if you have a bigger SSD.

In case it searches still for MicroSD, write with the Pi Imager «Misc utility images -> Bootloader -> USB Boot to the MicroSD, put it in and start the Rasperry, wait around 15 seconds, remove power and MicroSD and try again.

6. Set up the Raspberry again

By starting from the SSD, the password must be changed again. Upon logging in for the first time if the Pi is connected to the internet Ubuntu will immediately/soon start a lengthy update process via snapd and apt.

Make sure you give the system enough time (20 Minutes at least) to finish this process before doing going forward.

7. Change basic settings

Code is adapted from an Instruction, check here if you need further information’s).

7.1. Update by command

sudo apt update && sudo apt upgrade

7.2. Restart by command

sudo reboot

7.3. Change the keyboard to your Language (if wished)

sudo dpkg-reconfigure keyboard-configuration

7.4. Restart by command

sudo reboot

7.5. Set the time zone

sudo dpkg-reconfigure tzdata

7.6. Restart by command

sudo reboot

7.7. Speed testing of SSD via

sudo hdparm -tT /dev/sda && sudo hdparm -tT --direct /dev/sda

8. System optimization

8.1. Minimize GPU, deactivate Bluetooth, deactivate Wifi and overclocking

sudo nano /boot/firmware/config.txt

Add the following in the config file under [all]


Save via ctrl + x and confirm.

9. Final Establishment

9.1. Change host name

Code is adapted from an Instruction, check here if you need further information’s).

hostnamectl set-hostname NEWHOSTNAME

9.2. Create user

Code is adapted from an Instruction, check here if you need further information’s).

 sudo -i
 sudo adduser NEWUSER

Enter your new password and confirm again.

9.3. Give sudo permission

sudo usermod -aG sudo NEWUSER

9.4. Check and even extend authorization

 groups NEWUSER && groups ubuntu
 sudo usermod -G ubuntu, adm, dialout, cdrom, floppy, sudo, audio, dip, video, plugdev, netdev, lxd, root NEWUSER

9.5. Add the entry for the new user in Visudo

root ALL = (ALL: ALL) ALL 

Save via ctrl + x and confirm.

9.6. Terminate old processes and block users

 sudo pkill -u ubuntu
 sudo usermod -L ubuntu

9.7. Change to new User

sudo su -NEWUSER

10. Firewall Setup

Code is adapted from an Instruction, check here if you need further information’s).

10.1. Install & activate the firewall

 sudo apt install ufw
 sudo ufw enable

10.2. Open the corresponding TCP ports for Harmony & local SSH from another PC

sudo ufw allow from LOCALIP to any port 22
sudo ufw allow 6000/tcp
sudo ufw allow 9000/tcp
sudo ufw allow 9500/tcp

10.3. Check Firewall

sudo ufw status

Congratulation you set up your Raspberry Pi and it is ready for setting up as Node!

Since HMY CLI is not natively supported ARM systems yet, install it on a x86_64 system to setup the BLS Keys. After that, copy them to the same .hmy/blskeys folder on Raspberry Pi.

11. Continue Node Setup

Continue node setup from Rclone onwards.

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