Difference between revisions of "Zero/install/eMMC erase"

Revision as of 08:12, 6 December 2021

    Radxa Zero >  Installation >  Erase eMMC bootloader

How to erase bootloader from eMMC

This guide describes how to completely erase Radxa Zero's eMMC. Unlike normal PC where they have a well established and documented way of booting, in embedded world it is a bit chaotic and everyone carries their own bootloader and boot sequence. As such it's best to wipe the eMMC completely and have a clean environment before flashing a new image to eMMC.

Requirement

• Radxa Zero
• A PC/laptop running Windows, Linux, or macOS
• USB A to C cable or C to C cable, depending on your host

Windows

First, follow maskrom guide to setup and load factory-loader.img:

You can then click Erase button to erase the eMMC.

Linux & macOS

First, follow maskrom guide to setup and load rz-fastboot-loader.bin.

You are now booted into fastboot mode. Check it by running lsusb:

Bus 001 Device 076: ID 18d1:0d02 Google Inc. USB download gadget  Serial: 1234567890

Now execute the following commands to wipe eMMC:

macOS:

fastboot flashing unlock_critical
fastboot flashing unlock
fastboot erase bootloader
fastboot erase bootloader-boot0
fastboot erase bootloader-boot1
fastboot reboot

Linux:

sudo fastboot flashing unlock_critical
sudo fastboot flashing unlock
sudo fastboot erase bootloader
sudo fastboot erase bootloader-boot0
sudo fastboot erase bootloader-boot1
sudo fastboot reboot