Delete me: Installing RISC OS on the Raspberry Pi 4 (Rev #6)

Preparing the SD card

You will need the following items:

• A 2GB (or larger) MicroSD card
• The RISC OS Pi image (version 5.28) from the Downloads page

Unpack the RISC OS Pi archive and use a utility such as Win32DiskImager (Windows) or Etcher (Linux/macOS) to copy the image to the MicroSD card. This will create an SD card in a suitable format, but only the first 2GB of the card will be usable by RISC OS.

Using the SD card in the Pi 4

1. Connect a suitable power supply to the USB-C (power entry) port of the Pi 4.
2. Connect a keyboard and mouse to the USB ports.
3. Connect the HDMI cable to the left-hand HDMI port (HDMI0).
4. Optional – Connect the Ethernet port to your broadband router (or equivalent network port with Internet access).
5. Insert the SD card into the Pi 4 and power on. If all is well, the system will boot¹ to the RISC OS desktop at the monitor’s native resolution (e.g. 1920×1080).

With some monitors (particularly 4K monitors) you may find that the desktop is displayed at a low resolution (e.g. 640×480). You can increase this to 1920×1080 via Configure > Screen in the usual way.

¹ It can take 30-40 seconds for the boot-up progress screen to appear. You should be at the RISC OS desktop some 50 seconds after powering-on (roughly twice as long as it takes on a Pi 3).

Further information

See Using RISC OS on the Raspberry Pi for information applicable to all models of Raspberry Pi.