The purpose of this post is to briefly show how to install the Raspberry Pi OS into a new microSD card using a laptop or desktop. Then boot the Raspberry Pi with this microSD card.

The Raspberry Pi will automatically connect to your wifi and the ssh tcp/22 service should be running, which will allow you to connect via ssh.

No need for a monitor to be connected to the Raspberry Pi.

Using the laptop or desktop, in the command line, the ddcommand will copy the Raspberry Pi OS into the microSD card.

After the dd command, 2 files need to be added to the /boot folder in the microSD card.

- One empty file named `ssh`

- One file named `wpa_supplicant.conf` with your wireless configuration

example for the wpa_supplicant.conf file

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=GB

network={
scan_ssid=1
ssid="MY_WIFI_NAME"
psk="MY_WIFI_PASSWORD"
}

!!!NOTE If you have multiple wlan interfaces, you can use one file per interface, example wpa_supplicant-wlan1.conf

Step-by-step detail

Step 1 - Download

Step 2 - Unzip

Step 3 - Copy

  • Copy the Raspberry Pi OS into the microSD card.

    • Make sure there are no mount folders.

    unmount micro sd card to install raspberry pi

IMPORTANT - the dd command will delete everything in the microSD card - make sure you know what you are doing! Otherwise stop here or follow the official guidance here.

I am using the dd command.

sudo dd bs=1m if=path_of_your_image.img of=/dev/rdiskN; sync

  • Example of my dd command running
dd bs=1m if=2020-08-20-raspios-buster-armhf-lite.img of=/dev/rdisk2; sync
1760+0 records in
1760+0 records out
1845493760 bytes transferred in xxxxxxx secs (xxxxxxx bytes/sec)

Step 4 - add files into the boot folder

After the copy, the first partition in the microSD card, is usualy automatically mounted /boot.

Now, all I need to do, is to copy the files that I already have on my laptop into this /boot folder.

I just have to drag-and-drop (or copy and paste) then into the /boot folder.

  • One empty file named ssh

    ssh

  • One file named wpa_supplicant.conf with your wireless configuration

country=GB
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
scan_ssid=1
ssid="MY_WIFI_NAME"
psk="MY_WIFI_PASSWORD"
}

if you cannot copy the files, why not use the command line?

cd /Volumes/boot

touch ssh

vim wpa_supplicant.conf << and add the content in here

Power on Raspberry PI Conclusion

And that’s it :)

Now, eject the microSD card from your laptop, put it in the Raspberry Pi and on boot the Raspberry Pi, it should connect to your wifi.

To connect via ssh you need to find the ip address that was allocated to the Raspberry Pi.

Usually, you can easy find the ip address in your home router connected devices.

Alternativelly, if you have nmap installed your your laptop (or on another Raspberry Pi), you can scan your network for devices with tcp/ssh port 22 open.

example for the nmap command

## searching for new device on local network

nmap -sT -p22 --open 192.168.1.0/24 # ( CHANGE FOR YOUR OWN SUBNET)

(...)
Nmap scan report for `raspberrypi.home.local` (192.168.1.238)  
Host is up (0.042s latency).
(...)


## Connect to raspberrypi.home.local

ssh [email protected]

default username `pi`
default password `rasbperry`


## Change pi default password 

pi@raspberrypi:~ $ sudo passwd pi
New password:
Retype new password:
passwd: password updated successfully


## Update and configure for your needs

pi@raspberrypi:~ $ sudo raspi-config

sudo-raspi-config.png

For example, change hostname, update config for your needs, check my other post on category raspberry-pi

Happy learning,

Antonio.Cloud