Motherboards and BIOS PCIe bifurcation required

Dude said:

You can place in your PCIe X16 slot. and set to run PCIeX8.

Unfortunately PCIe x16 slot is used for a video card and which is the only x16 slot for the motherboard.
Is there a way to use x8 slot to drive two M.2 devices?

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Dude said:

Im going to reach out to a friend that has a Gigabyte MB to check with you too
@sygnus21 could you review please

What CPU do you have in it?

The CPU is Ryzen 5 5600X.
I did not understand what does "@sygnus21 could you review please" mean. I jumped to the link but wondered what from there.

Dude said:

If you don't fill out you system specs we don't know what you have. You ask a question can I use this, but don't tell us what your system is. Fill out specs completely.
What that meant is I asked him to see if he can help, he has a Gigabyte MB.
Help us help you

You asked what the CPU is and I answered. Is there something for me to fill out? I can post what msinfo32 returns at cmmand prompt, and screen shot of Disk Management in Windows. Do these help you to help me? But on the other hand you also state "don't tell us what your system is" I am confused.

Dude said:

No, I said you didn't tell us the new system. Click the my computer bottom left of your post. Fill in information for the system

Following is the system info of the machine under construction:
****************************************************************************************** Computer Type: PC/Desktop
System Manufacturer/Model Number: Built by me

OS: Win 10 Pro (x64) 21H1
CPU: AMD Ryzen 5 5600X

Motherboard: Gigabyte AORUS X570 Ultra BIOS: F32
Memory: 32G (16GBx2) DDR4 G.Skill Rpjaws V Model: F4-3600C18D-32-GVK

Graphic Card : Radeon R7 370
Sound Card: Onboard
Monitor(s) Displays: DELL P2715Q(27 inch)
Screen Resolution: 3810 x 2160
Keyboard: BTH Model 5139H
Mouse: Microsoft Otical Mouse 3000

PSU: Corsair RM650 (650W)
Case: Fractal FD-CA-FOCUS-BK-W
Cooling: Cooler Master MasterLiquid Lite 120 AIO
Hard Drives: 1) Samsung SSD U.2 drive – 1TB(OSes), 2)Samsung SSD U.2 drive – 4TB(DATA),
3) Samsung 980 Pro M.2 NVMe(OSes), 4) Samsung 970 EVO Plus M.2 NVMe(OSes)
Internet Speed: 200M UP, 15M Down
Antivirus: Defender
Other Info: Linkreal PCIe v.3.0 host adapter for two M.2 storage devices – 3) and 4) above.

*****************************************************************************************
Image below is front view of the machine which shows 3.5" bay and 5.25" bay that house the M.2 and U.2 SSDs

The problem is only one M.2 SSD of the two installed in the 3.5" bay is recognized. These two SSDs are connected to the PCIe host which installed to x8 PCIe v.4.0 slot. As the vender of the PCIe host adapter indicates that bifurcation of the PCIe slot appears needed done in order for the two SSDs to be recognized. I reviewed the article linked in Synus21's post above and tried to enable Bifurcation but never able to get both M.2 SSDs recognized.
In the case for the article Asrock motherboard is used so that I had difficulty following the procedure.
The following is where I attempted to enable Bifurcation but could not.

Is there a way to use x8 slot to drive two M.2 devices?

Is the x4 slot on your mobo free? Is there some way of running one from the x8 and the other from the x4

Your link doesnt lead anywhere, but it might be this LRNV93NF

sygnus21 said:

If you intend to hot-swap drives you need to make sure to enable "Hot Plug" so you can safely remove and install swappable drives without issues such as drives not being recognized once removed and plugged back in again. Been there done that



That said, again, not sure about AMD boards or Bifurcation requirements. Anyway let me know if this worked or not.

Thanks.

I have been using the 5.25" bay for four 2.5" hd/ssd for 10 years but swapping was done only for data drives. I never thought of doing the same for system drives. My present problem is to get the two M.2 SSD recognized and W10 installed in them boot. Note that W10 installed in M.2 never able to boot except when the storage is installed direct on the motherboard, which may be a separate issue

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SIW2 said:

Is the x4 slot on your mobo free? Is there some way of running one from the x8 and the other from the x4

Your link doesnt lead anywhere, but it might be this LRNV93NF

I have only one PCIe host adapter. One drive is recognized so far but W10 installed never able to boot. I would rather see the W10 working at this point ahead of solving bifurcation issue. I have two M.2 drive in which W10 is installed. W10 was intalled on 500MB M.2 NDMe while it was installed direct to the motherboard. Another W10 was installed on 1TB M.2 NVMe while it was installed in Linkreal PCIe host adapter.
Model name of the Linkreal PCIe is LRNV93N8 details of which can be reviewed at the link in you post.