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    ROCK 3 >  Installation >  Install on microSD

Install on microSD

This page describes how to download and install the image on a microSD card and boot on ROCK 3. You need at least the following.

Step1: Requirements

• ROCK 3 board with power supply
• a microSD card, larger than 8GB, class 10 or better
• a microSD card reader, either a USB card reader or the SD card reader on laptop
• a PC/laptop running Windows or Linux or MacOS

Step 2: Download necessary tools and image

• Etcher is the tool we use to write image. Download the right Etcher for your PC from rock3/downloads page and install it. Check [Etcher website] for more info about Etcher.
• Choose the image you want to install from rock3/downloads page.

rock3a_debian_buster_xfce4_arm64_20210824_0136-gpt.img.gz

We will use it for the writing.

Step 3: Write the image to microSD card

1. Insert the microSD Card into microSD Card Reader, which connects to host computer.

2. Run the application. For example double click balenaEtcher-1.5.116-x64.AppImage on Ubuntu 20.04:

3. In the etcher window, we click button Select image.

4. In the etcher window, we click button Select Drive.

5. In the etcher window, we click button Flash.

6. In the etcher window, it shows us Flash Complete!

Done! Now you have successfully installed the OS image on microSD card.