When the ODROID-M1 is setup to boot from SPI with the system installed on a M2 ssd, power loss seems to lead to an unbootable system.
Once an SD card with armbian is inserted and the system is booted through the recovery button once, logged in* and then shutdown normally, the system boots again from SPI.
* Without login and regular shutdown of the system booted from sd card, the issue remains
I have observed and reproduced this issue several times in the last year.
In my case the M1 is connected to a power strip that turns on and off the multiple devices.
When I forget to unplug the M1 and it gets turned on and off several times over a day or more, the issue appears.
When I turn it of manually I could not yet observe the issue, so it may be related to being booted and turned off multiple times in short order.
When I investigate the journal of the last boot circles, there is nothing there, as if the boot process never started, leaving me to suspect an issue with the bootloader in combination with SPI and power loss.