I have to update some outdated embedded systems. But the RAUC Update contains four partitions, while the old systems have only three partitions.
The additional Partition is at the start of the disk and I cannot flash the devices with an external Adapter.
What I have, is SSH access to the existing Linux on the device.
Could I change the partition table somehow from within the running system and thereby move the system partition?
Or could I somehow
dd the whole disk with a new image?
I just cannot get my head around this problem and I am not sure, if I am missing a good solution here.