so as I alluded to in my previous post, I tried popping in a SK Hynix P31 Gold into the top slot of a cheap dual-slot NVMe M.2 PCIe adapter, but the system would hang at an IPMI initialization stage.
...no support for bifurcation in the ancient 1.x BIOS on my X10SDV board (makes sense, this was only added to more recent versions of the X10SDV BIOS).
Tried moving the NVMe SSD into the bottom slot, with the hope that it would be detected as a regular x4 PCIe card in a PCIe 8x slot.
BIOS passes this time - but no mention of NVMe anywhere in the BIOS (too bad, my SM A1SAi-2750F which predates this X10SDV has BIOS support for NVMe).
However, with the NVMe card in the bottom slot, the Linux boot doesn't seem to work - the screen turns black immediately after selecting the boot entry from the Grub bootloader.
As a next step, I might try modding the X10SDV BIOS as instructed here:
[HowTo] Get full NVMe Support for all Systems with an AMI UEFI BIOS
I'm wondering how my board was being booted in its intended use - maybe using PXE from the X10SDV-CIBF-AM041 ?
@adaptivesystems which adapter cable did you use for the internal USB header? I might want to resort to using that if my NVMe boot attempts fail.