Step 1

• Download the OS from here: https://www.raspberrypi.org/downloads/
• Download the etcher from here: https://www.balena.io/etcher/
• Extract the image file from downloaded OS
• Plug your sd card into the system
• Open the etcher, select the image and your sd card
• Press flash button
• Congo!! you have successfully booted os on sd card.

Step 2

• Now we need to create two files in raspberry pi boot folder inside the sd card.
• First create a file named ssh (without any extension) using this command.

• touch ssh

• Create second file named wpa_supplicant.conf

• ctrl_interface=/var/run/wpa_supplicant
  update_config=1
  country=<Insert country code here> # IN (INDIA)
  
  network={
   ssid="<Name of your WiFi>"
   psk="<Password for your WiFi>"
  }

• Now insert the sd card into your raspberry pi and power it on.

Step 3

• Now we need to find the IP address of raspberry
• Install nmap using this command

• sudo apt install nmap

• Now get your system ip address using command ifconfig
• Now scan your whole network using the command below
• nmap -sn <your ip address>/24 
• Note: replace your ip address last digit with 0. For example: 192.168.41.16 with 192.168.41.0
• Now you need to manually identify the ip address of your raspberry.
• To verify the ip we need to ssh into the raspberry pi with each ip.

Step 4

• For each ip ssh using the below command

• ssh pi@<ip address>

• Default password is raspberry
• Now you have successfully logged in to your raspberry pi

Step 5

• Now you are logged in as user pi , which is the default user
• Enable the root user for login using ssh
• First Login with pi user using default password which is raspberry
• Now write this command to login as root

• sudo su

• Now edit the file /etc/ssh/sshd_config using below command
• nano /etc/ssh/sshd_config
• Change the text #PermitRootLogin without-password to  PermitRootLogin yes
• Now save and exit file
• Now to write the below command to restart ssh service

• /etc/init.d/ssh restart

• Now set your root password using the below command

• passwd root

• Now enter your password.
• Once you have succesfully set the password, you can login to raspberry as root user using the below command

• ssh root@<raspberry ip address>