How to force boot Core3566 from SD card with OS falshed in emmc

2024-03-19 10:34

I got Core3566 mounted on CM4-IO-BASE-B. I've installed Linero on emmc but I want to boot from Linero installed on SD card. when I insert SD card and boot the Core3566, most of the times it boots from eMMC and occasionally it boots from SD card. how to force to boot from SD card always without removing OS from eMMC. I don't want to hold boot button to boot SD card because i reboot the board remotely from ssh with reboot command. so I want to make sure that it boots from TF card.

2024-03-20 1:58

Erasing the system inside the eMMC will result in the system booting from the SD card by default.

2024-03-20 6:43

as i already said i don't want to erase emmc. is there a uboot config to do this?

2024-03-27 18:37

and also holding the boot button is disabling mmc totally making it inaccessible when booted from sdcard

2024-03-28 3:28

Hello, I have already reported the boot order issue to the engineer, and they need to modify the related u-boot source code. Currently, it's not possible to prioritize the TF card for booting. If we can achieve the capability to freely switch the boot order later, I will contact you immediately.