UEFI shell cannot recognize EFI System partition

Hi,

Trying to setup DN2820FYKH with a 128GB SSD.  Have it partition like this:

GNU Parted 3.1

Using /dev/sda

Welcome to GNU Parted! Type 'help' to view a list of commands.

(parted) p

Model: ATA PLEXTOR PX-128M5 (scsi)

Disk /dev/sda: 128GB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

 

Number  Start   End     Size    File system     Name              Flags

1      1049kB  538MB   537MB   fat32           EFI System        boot

2      538MB   9128MB  8590MB  linux-swap(v1)  Linux swap

3      9128MB  34.9GB  25.8GB  ext4            Linux filesystem

 

When I get into the UEFI shell, the map shows:

Device mapping table

fs0     :Removeable HardDisk - Alias hd6b0b blk0

           PCIRoot(0x)/Pci(0x14,0x0)/USB(0x1,0x0) /HD (1,MBR,0x17FB983D,0xAEC,0xB40)

blk0    :Removeable HardDisk - Alias hd6b0b fs0

           PCIRoot(0x)/Pci(0x14,0x0)/USB(0x1,0x0) /HD (1,MBR,0x17FB983D,0xAEC,0xB40)

blk1    :HardDisk - Alias (null)

           PCIRoot(0x0)/Pci(0x13,0x0)/Sata(0x0,0x0) /HD (1,GPT,D050DE98-C28F-462E0BD18-3FFA290486B7,0x800,0x100000)

blk2    :HardDisk - Alias (null)

           PCIRoot(0x0)/Pci(0x13,0x0)/Sata(0x0,0x0) /HD (2,GPT,86D523EE-EE17-4197-8322-B49298364750,0x100800,0x1000000)

blk3    :HardDisk - Alias (null)

     ...

blk4    :HardDisk - Alias (null)

It seems like the UEFI code in the NUC cannot recognize the EFI system partition at all.  I have enabled Visual Boot Manager and it does not give me this UEFI boot partition choice.

Going into the Visual BIOS setup, the UEFI boot list does not show this partition.   Any reason why this FAT32 partition cannot be mapped properly?

If I boot from the USB drive, I can see the /BOOT/EFI/bootx64.efi in this first partition, mounted as vfat.

I have read so many similar threads here about UEFI boot device issue but I cannot really see any proper solution given.

Cheers,

Alex