[HowTo] Get full NVMe Support for all Systems with an AMI UEFI BIOS

Thank you for your reply and great advice.
I did’nt read that you could boot from a cloned system disk I just assumed that you could.
I have already cloned my system disk to a m.2 attached to a pcie1X adaptor card on my other PC which has a GA-A320-S2H MOBO and Athlon 950 cpu but this is more up to date.All worked well.So I thought you could do the same.

I wanted to run this bios mod.
Unfortunately, I get stuck when creating it. I have the problem “File size exceeds volume size”

I hope you can help me here is the link to the current bios


Asus Rog G751JY-T7336

Thanks in advance

Even with the small DXE_4?

EDIT: Yes, the name is NvmExpressDxe_Small (6Kb) and ALL versions, standard, small, compressed…its all an NVMe DXE module so there is no wrong choice “blindly” using any one, the issue is the size taken on the insertion volume.

There’s also a small compressed of 4kb

he tells me the same thing about the dxe4

and I can’t find dxe4 small in the onedrive cloud. Only which ones are called small. But not known if 4 or 5

and now just blindly using one wouldn’t be the wisest thing to do

Alrighty, I am have modified my BIOS and I’m ready to risk flashing. I tried already, but the build date is “too old” x.X

Oh… you think that the Asus utility and securities will let you flash a mod bios… please, use your brain and safe measures.

You really can make your system death… Fernando warns in point#3…users dont like to read good guides… too much words, they just want it done.


Hello my friends. :slight_smile:

Yesterday evening I went to give my old notebook a bios mod… with a few hurdles but ok.

My problem is now. the bios is already modded and it is already on the notebook. I also find the entry nvme… in the rom etc.
“But I still have no support. maybe someone could take a look?

If anyone wants to help me. Just call. then the files come within 10 minutes :P.

Greets from Germany
Happy weekend :stuck_out_tongue:

NVMe mod flashed and confirmed so… windows install as next step?
Support… i dont “compute” the term… read the respective guide.
Its all there…too much reading? So sorry, the guide also took the author is time.

Greetings, I wanted to know if someone can help me, I have a dell optiplex 3040 with bios OptiPlex_3040_1.19.1.exe… I extracted the bin file has several, I want to modify it to embed the drive for nvme, the problem I have is that the “CSMCORE”, does not appear in my bios, and I do not want to touch anything until I am sure where to enter the information in the correct site I don’t want to damage the computer… Can someone guide me?

P.D.: I followed the guide but my bios is different and the work is more serious

Welcome to the Win-Raid Forum!
To be able to help you I have to do a look into the pure BIOS *.bin file.
Please attach it as compressed .zip /.rar file or post a link to it.
Dieter (alias Fernando)

Followed your instruction carefully and successfully worked on the Bios version 3.94 and 3.96 of HP Z820 system. But it does not work. Please see detail here: <https://winraid.level1techs.com/t/hp-z820-adding-nvme/33865/15>. Please provide further guidance.Thanks!

Welcome to the Win-Raid Forum!
This is the thread about how to insert the NVMe module into the mainboard BIOS and about how to get Win10/11 successfully installed onto the NVMe SSD, whereas your linked thread is about how to get a modded HP BIOS successfully flashed.
Since I have no own experience with HP mainboards, I cannot help you regarding your linked report.

  1. What makes you sure, that the flashing of the NVMe modded BIOS was successful?
  2. After having entered the BIOS, do you see a device named “PATA” within the “BOOT” section while CSM is enabled?
  3. How did you try to get Win10/11 installed?

Dieter (alias Fernando)

Hello, I have taken some pictures but I am not allowed to upload picture here.

  1. What makes you sure, that the flashing of the NVMe modded BIOS was successful?
    The bios was flashed in FreeDOS boot and it is said the flash is successful. Furthermore the version of the bios was updated in the bios boot screen.
  2. After having entered the BIOS, do you see a device named “PATA” within the “BOOT” section while CSM is enabled?
    The bios of HP Zx20 stations cannot see any storage other than IDE unless one go to LSI RAID setting. When it is set to UEFI, none of the devices can be seen.
  3. How did you try to get Win10/11 installed?
    It is common that everyone can install WIndows into the NVMe SSD, but can not boot it.


You cannot install Windows onto an NVMe SSD the direct way. The first step is the creation of the “Windows Boot Manager” partition according point 4 of my guide (= start post of this thread). After having done it, the NVMe SSD will be bootable (provided, that the NVMe module has been properly inserted and the modded BIOS successfully flashed).

In bios setting, the storage is set to UEFI. The NVMe SSD is partitioned as a GPT disk. When start installation, the system started with the UEFI USB Windows installation disk in custom mod. When NVMe SSD appears, thw windows can be installed into a partition. After installation, the windows boot manager is sitting in the root partition. if the disk is bootable, you can see the windows boot manager if you go to boot mod.

I would like to ask two questions:
1:I have an Asus H 87 Plus mobo and it havent Flashback feature.
Can I use EZ flash to update the mod.bios?
2.Is it possible to install also cloned windows 10 via Acronis true image tool or need to fresh Win install?

Welcome to the Win-RAID Forum!
Here are my answers:

  1. The answer can be found >here<.
  2. It is possible to get a cloned Win10/11 installed onto an NVMe SSD, but I do not recommend to do it (the risks of a failure are much higher and you miss the chance to get rid of the garbage).

Good luck!
Dieter (alias Fernando)

3 posts were merged into an existing topic: [Guide] How to flash a modded AMI UEFI BIOS

I just want to thank you for this amazing guide, i successfully modded and flashed the modded bios of my gigabyte H81M-H and now it can boot win 11 from a kioxia kbg40zns256g nvme ssd attached to a pci adapter. I was using the clover method to boot but this is a much better way.

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Welcome to the Win-Raid Forum and congratulations for having succeeded and now being able to boot off an NVMe SSD.
Enjoy it!
Dieter (alias Fernando)

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