Hi there.
I've got the problem with boot from emmc when empty SD card is installed.

Opi PC+
Armbian (debian 9 stretch)
Kernel 5.4.20-sunxi

I've moved OS from SD to emmc using armbian-config util, then format SD with fat and now when I power on my OPi without SD card all is ok, but when SD installed boot get stuck with error "Script failed", unknown device...
I've tried to chang mmc0‘s sdc_detmode, but doesn't have /boot/script.bin
Can anyone help? Thank you.

 

Spoiler

 

2 hours ago, Scandinav21 said:

then format SD with fat

It is not enough to format the partition of SDCard, it doesn't get rid of the u-boot located between partition table and the first partition.

You need to do the following :

dd if=/dev/zero of=/dev/mmcblk0 bs=1024 count=2048
fdisk /dev/mmcblk0

Then you can re-create new partition and format it ...

2 hours ago, martinayotte said:

Thank you.

Fixed!