On my BIGTREETECH E3EZ i switched from the CB1 to the Raspberry PI CM4. Unfortunately on every boot the following message appeared:
The issue is the missing PCIe Port, hence you have to disable the feature to get rid of this message.
Create the file
disable-pcie-overlay.dts with the following command:
You must then convert the file using the following command:
Then delete the file with the following command:
Finally open the boot config file using the following command:
And add the following line at the top:
Then save using
X which will ask you to save. Enter
ENTER to save. On the next reboot that message from above will be gone.