Low-Level Development

📄️ BIOS Description

The BIOS (Basic Input / Output System) is the firmware on the motherboard. It runs first when power is applied, wakes up the hardware, performs the self-test, and boots the operating system. It acts as the "bridge" between the hardware and the OS.

📄️ Radxa OS Boot Configuration

Radxa OS ships with three default partitions:

🗃️ Build System

3 items

📄️ Entering EDL Mode

Qualcomm EDL (Qualcomm Download Mode) is an emergency download mode for Qualcomm processor devices. It is mainly used for emergency repair, firmware flashing, or unlocking devices.

📄️ Flashing BIOS Firmware

Radxa Dragon Q8B ships with BIOS firmware preinstalled. Normally you do not need to flash the boot firmware. If the system fails to boot properly, you can try reflashing the BIOS firmware.