What is the max capacity eMMC supported by NanoPi Zero2?

[dheydeck1]

https://wiki.friendlyelec.com/wiki/index.php/NanoPi_Zero2#Hardware_Spec states:
Flash: Supports eMMC Module
No maximum is stated, but FRIENDLY ELEC only sells 32 and 64GB cards.
I have seen 126GB cards for sale, with what appears to be the same module format, for Orange Pi devices and with the same manufacturer of the eMMC chip itself. Assuming that the module pinout is compatible with the NanoPi Zero2, is the 256GB card likely to work with it? Or are there architectural constraints that mean that the Zero2 could not support an eMMC card of this size?
The product page https://www.friendlyelec.com/index.php?route=product/product&path=69&product_id=304 states that the Zero2 has: MicroSD Slot: MicroSD x l for external storage up to 128GB so I suspect that 256GB may be beyond the capabilities of this (fantastic) device.
Thank you in anticipation of any response!

[DroZDi]

I have my Nanopi Zero2 board.
I bought regular eMMC card 256GB (OrangePI branded) - working like a charm

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Installation OS to eMMMC is much more simple:

download image on SD card and unzip it

root@FriendlyWrt:/opt/upload# fdisk -l /dev/mmcblk2
GPT PMBR size mismatch (15234373 != 488554495) will be corrected by write.
The backup GPT table is corrupt, but the primary appears OK, so that will be used.
The backup GPT table is not on the end of the device.
Disk /dev/mmcblk2: 232.96 GiB, 250139901952 bytes, 488554496 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 73987B6B-4974-4C94-A3E8-58AB2EB7A946

Device Start End Sectors Size Type
/dev/mmcblk2p1 16384 24575 8192 4M unknown
/dev/mmcblk2p2 24576 32767 8192 4M unknown
/dev/mmcblk2p3 32768 40959 8192 4M unknown
/dev/mmcblk2p4 40960 73727 32768 16M unknown
/dev/mmcblk2p5 73728 155647 81920 40M unknown
/dev/mmcblk2p6 155648 221183 65536 32M unknown
/dev/mmcblk2p7 221184 286719 65536 32M unknown
/dev/mmcblk2p8 286720 4218879 3932160 1.9G unknown
/dev/mmcblk2p9 4218880 15234340 11015461 5.3G unknown

# fdisk /dev/mmcblk2
p (print)
d 1 --- all partitions
w
Y

# dd bs=1M if=rk3528-sd-ubuntu-noble-core-6.1-arm64-20250211.img of=/dev/mmcblk2 status=progress