Hello
I gave my card asus mini with a ssd m2,
I looked for an adapter with the possibility to put two M2 key M but I did not find anything that could be mounted in Raid
With the map hyper M 2 I managed to see the two Ssd M2 on port 3 of the motherboard on positions 1 and 4
thank you to all of you

This Bifurcation Support for X79 looks awesome! I know my Board does have something like bifurcation options in my bios, but its not working at all.
I already managed to implement the nvme stuff to run an m2 as bootable disk.

Have you got any idea how to get startet modding the Bios of an Asus Z9pe D8 WS Bios with an c602 Chipset for bifurcation support?

@3dsmaxer
Bifurcation should work with this bios http://s000.tinyupload.com/index.php?fil...294451722268602 for your motherboard using "Advanced > Chipset Configuration > CPU IIO Bridge Configuration" in the bios. Any 4 slot Nvme card (except supermicro those can break stuff) should be in PCIe port 1(IOU2), 3(IOU3), 5(IOU2 second instance) or 7(IOU3 second instance) on setting x4x4x4x4 . What NVME carrier card are you using?

@JackSted
I'm trying to use an Asus Hypercard V2 with 4 M2 Slots.
In the past, i was doing an bios modd on myself due several "tutorials" over here. So the link you've posted got a biosfile which should work? If so, I'm going to try it and flashing my bios again with this modd.

I've already enabled bifurcation in my bios and when i ran HWinfo, it shows

PCI Bus#0 :
PCI Express Root Port 1a
PCI Express Root Port 1b

So is it already working?

I got the card in the first PCI Port installed, but its listed at PCI Express Root Port 2

@3dsmaxer30
Nice work on the modding, if you have the menu I mentioned that is. If you do I'd change these settings before flashing the one i posted:
PCIe port 1 is IOU2 in the bios. I think you put IOU1 on x4x4 instead of IOU2 on x4x4x4x4.

The numbers don't correspond from the BIOS to the Physical port number in the manual. From the top i think i'ts
PCIe port 1=IOU2 x16
PCIe port 2=IOU1 x8
PCIe port 3=IOU3 x16
PCIe port 4=IOU0 second instance* x8
PCIe port 5=IOU2 second instance x16
PCIe port 6=IOU1 second instance* x8
PCIe port 7=IOU3 second instance x16
*might be switched around not sure

@JackSted
Actually i was changing all ports to bifurcation to see, which IOU it is :D Maybe this could be as mistake as well...
Anyway, i will give it a try and let you know what configuration was working :)
Thanks a lot so far :)

@jacksted
So I just tried to setup my bios correctly without changing the bios. I wasn't able to set the first PCIe Lane to 4x4x4x4 nor 8x8. It just nothing happened after reboot.

I change my hyper card from lane 1 to lane 3 (changing hypercard with my graphic card), then I set lane 3 to 8x8 and hwinfo just shows me 3a and 3c.
On 3c I got my m2 bootable drive which is placed on the first slot of the hypercard (looking from top to bottom).
But on 3a I just got nothing. My second m2 is placed in the second slot of my hypercard.
As soon as I set the pci lane 3 to 4x4x4x4 he just won't boot windows anymore, just return to my bios.

Any idea what could be wrong?

@3dsmaxer30
The first detected M.2 slot should be the bottom one 3a and the last one detected should be the top one 3d. You're findings are strange the 3c should be 3d.

Try this please:
1. Put the boot NVME in the bottom NVME (slot labled #4)
2. Disable all bifurcation except for PCIe slot 3 IOU3 on x4x4x4x4
3. Move Asus Hyper M.2 x16 Card to PCIe slot 3 (from top)
4. Put the GPU in the top PCIe slot.

What happens, do all 4 NVME drives show up? Post HWinfo screenshot plz.

@3dsmaxer30
@JackSted
Just for additional information: This is how the Root Port/Slot Layout of my Z9PED8-WS is presented by HW Info.
The last three slots away from cpu direction are those connected to the second cpu (CPU#1) and are directly rooted to one of the latter's three root Ports.
The aren't switched so they can be bitfurcated without risk, wich is the option that the vanilla setup already supports.

This is how the M.2 SSDs on the UltraQuad Card are rooted in the system.

@JackSted
@3dsmaxer30

What is displyed as IOH0 in Bios Setup are the Ports from CPU#0 while IOH1 are those from CPU#1.

IOU1 from IOH1 is slot 6 on MB (6th from CPU): ×8 electrically.
IOU2 from IOH1 is slot 5 on MB (5th from CPU): ×16
IOU3 from IOH1 is slot 7 on MB (7th from CPU): ×16

IOU1 (PCIe×8) from IOH0 is located to slots 2 and 4 on MB (both as Root Port1 in HWInfo). It/these cannot be bitfurcated.
IOU2 and IOU3 (PCIe×16 each) from IOH0 are located to Root Port 2a and 3a.
I don't know which is which in Bios Setup, but in HWInfo Slot1 is rooted to what is labelled Root Port 2a.

If you try to bitfurcate slot 3 on MB, you are using a slot which is auto-switched from ×16 to ×8 when slot 4 is occupied.
This means you could make use of all 16 lanes of slot 3, but in any case it's a switched slot.
No idea how that could affect several M.2 devices connected to that slot via a Quad M.4 Card.

Sorry if this information might be reduntant but I got the impression that it might not be clear which Root Port is located to which board slot.

@paranoid_android Thanks for the extra info, and for showing us bifurcation can fully work on the Z9PE-D8-WS.
@3dsmaxer30
I can confirm PCIe routing/switching from the manual, sorry I missed it:

Zitat

---

2.5.4
PCI Express x16 slot (x16 link)
The onboard PCIE 1 and 3 provide one x16 Gen3 link to CPU1
(Auto switch
to x8 link if PCIE 2 and 4 are occupied); The onboard PCIE 5 and 7 provide
one x16 Gen3 link to CPU2. These slots support VGA cards and various
server class high performance add-on cards.

---

So for bifurcating for Asus Hyper M.2 x16 Card on Z9PE-D8-WS
1. Set bifurcation for PCIe slot 5 to x4x4x4x4 (Advanced \ Chipset Configuration \ CPU IIO Bridge Configuration \ IOH1 \ IOU3)
2. Move Asus Hyper M.2 x16 Card to PCIe slot 5 (from top)
3. Post HWinfo screenshot here for what is probably called PCIbus 128 please :).

@JackSted
@paranoid_android
Thanks a lot for your help and infos so far. But currently I ran into another problem. As far as I move my m2 hyper card to pci slot 5,6 or 7, it doesn't show up as boot drive in my bios anymore.

Oh...
This is interesting for me too, as I want to use Nvme boot on my Z9 machine later.
By the way, how did you incorporate nvme boot option in your z9 bios? I wasn't able to accomplish this yet as there is a write protection and the Z9 doesn't offer "Bios Flashback" like the X79 Boards.

@3dsmaxer30
What NVME boot method are you using USB (clover or duet) method or UEFI BIOS mod?
If you used UEFI BIOS mod, can you still set Windows Boot Manager as startup in UEFI BIOS.
Have you tried windows startup repair?