Hi, I have a seeed odyssey j4105, without the eMMC and no win10 licence. I have used it well for 6 months as a desktop with ubuntu, on a 2280 ssd in the ssd slot, not the NVME slot.
Now trying to learn arch linux. I have followed the arch instructions perfectly with no errors as far as I can tell, but it boots to efi, listing partitions. it simply can’t see a bootable anything. In bios it can see usb drives but not ssd drives. I bought an NVME drive and tried that too, no better, still just goes to efi prompt. This clearly works as it did on ubuntu. It can ultimately see the partitions as it dumps to an efi console with yellow text on a black back ground, if you type ‘help’ it will list 60-100 commands. I can’t find a user guide for this.