There are many editions of Raspberry Pi and many versions of Ubuntu. This how-to is specifically for setting up Ubuntu 20.10 on Raspberry Pi 3.
Ready hardware ready
- Raspberry Pi 3 Model B
- Micro USB 5V 3A power supply
- 16GB Micro SD card
A good power supply is needed, otherwise Raspberry Pi will complain about under voltage, keep rebooting, or have no HDMI video output. The micro SD card storage can be more or less than 16GB. The OS will use about 4GB. Choose a size that is required for the purpose of the device.
Download and run the image tool
An OS image is required to boot up the device. Ubuntu has a download site for Raspberry Pi at https://ubuntu.com/download/raspberry-pi. However, there is an easier way to creating the OS image.
Go to the web site to download and install Raspberry Pi Imager.
https://www.raspberrypi.org/blog/raspberry-pi-imager-imaging-utility/
The tool lets you select an OS image available online and a destination SD card connected on your computer.
For this how-to, Ubuntu Server 20.10 (RPi 3/4/400) should be selected.
The tool detects SD cards connected on the local computer. It's better to remove other SDs if there is any. Since the card will be wiped out, be careful about your selection. After OS and card are selected, click WRITE button. The selected OS image will be downloaded and written to you SD card.
Boot up Raspberry Pi
After the OS image is ready, plug the SD card into Raspberry Pi and power on the device. It will take a few minutes to boot up. Once the startup is done, the screen will prompt you to log in. The default username is ubuntu and the password is ubuntu, too. You will need to reset the password at the first login.
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