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#41
On a UEFI - GPT disk the boot loader is on a 100M Fat32 partition. On the disk images you posted I can see a Fat32 partition but I can't say if it is on your Win 10 disk as you have other disks attached.
So the first thing to find out is to know if your Win 10 disk is a Legacy-MBR or UEFI-GPT disk.
Open Disk Manager, go to (top menu) VIEW and select Top - Disk List.
What kind of disk is your Win 10, Legacy-MBR or UEFI-GPT?
Below is my win 10 1903 Disk manager image.