[Request] ASUS X99-WS/IPMI PCIe Slot Bifurcation

[oksymoronpl]

Okay, I've managed to get my hands on some WinPE distro and yes, I can confirm IOU1 seems to be the correct one to chose for Slot 2 BIF, seems like setting it to x4x4x4x4 does not work but I think this is because I am trying to use such bifurcation while having 4 PCIe slots occupied, from what I see all ports are locked to x8 so I'm gonna try to get x4x4 working on two slots and that will be it. I will report back.

https://imgur.com/a/mBeDDmm

EDIT 1: I've set a Slot 2 to x4x4x8, no difference, only one nvme drive visible - funny thing is, the detected NVMe drive changes with every boot, once it is a drive installed in Slot 1 of the card, the other time it's the drive from Slot 2.

I unfortunately don't see a x4x4 setting of Slot 2, I will the NVMe card to Slot 3 since that one can be bifurcated into x4x4 according to IntelRC menu.

[Maxinator500]

've set a Slot 2 to x4x4x8, no difference, only one nvme drive visible

Maybe it causued by the quick switches which some of the slots are connected through?

Well, I can't fix this, and the situation is disappointing.

[oksymoronpl]

I think it's because of the NVMe card that I have. However bifurcation seems to work.
I'm gonna try one more thing because I just noticed something after switching around cards, GPU all of a sudden got a x16 link, I will switch around ports, GPU will go to Slot 5 and NVMe Card will go to slot 3.

[oksymoronpl]

Okay, I can confirm this is a problem with my NVMe card, it's some cheap-a** chinese one with ASM chip that just doesn't care if you have bifurcation enabled or not. It just doesn't work properly from what I see. Bios mod itself is great, It does work, I can manage bifurcation from the BIOS. from Where I stand You helped me a ton. I will contact you via DMs.

[benneffect1]

Hi, folks! I need some help with bifurcation on my X99-WS/IPMI. I have flashed the UEFI with this modded file, but cannot get my M.2 card to show more than one drive at a time.
I am using an ASUS Hyper M.2 x16 Gen 4 PCIe adapter card and a couple SPCC Gen 3 NVMe drives and two Optane M10s. I have Hyper Kit enabled in UEFI settings, and I've played with setting the available x16 slots to x4x4x4x4, but I still only get one drive to show. I've even set every slot to bifurcate into x4x4 /x4x4x4x4 and toggled Hyper Kit, still getting the same result.


Extra Info:
I have an x8 HBA card in slot 1, the NVMe adapter is slot 2, a graphics card is slot 3, and an x8 10Gb NIC card in slot 5. I have Proxmox Virtual Environment installed on a couple SSDs. (Due to my MoBo being haunted, I cannot currently boot to anything else, including installation media.)

Are there other settings I need to adjust?