Banana Pi r4 emmc expand to full size

Hi all,
I treyed to expand mmc to full size like in my r3.
But I cant find /dev/mmcblk0p66 Partition.

I can see a /dev/mmcblkop5 with Filesystem unknown 7.2G.

System is the last snapshot from 2024-04-01.

r4 runs well on emmc.

What can I do?

Greetings Steffen