[Help] Mysterious partition rewriting on custom port (Volumio 3)

Hi everyone,

I am currently working on porting Volumio 3 to my own custom development board.

I’ve encountered a strange and critical issue where the system occasionally triggers a rewrite of my device’s partitions. I managed to capture a backend call to:
/sbin/sfdisk --delete /dev/mmcblk0 3

However, I am completely unable to trace what is triggering this command. I’ve looked through the scripts but can’t find the source.

Has anyone encountered similar behavior or knows which part of the Volumio backend might be calling sfdisk to delete partitions?
Any insights or pointers on where to look would be greatly appreciated!
Thanks in advance.