@Fernando
Regarding: 3. I am not able to count the already used and the free lanes of your specific system.
What sort of information is required to be able to know how many free lanes I have?

@Ethaniel Yes, I mean PCIe to M.2 adapter.

I will make sure the adapter will support x4 lanes and PCIe 2.0

I want to mode my BIOS so it will support booting from PCIe. However, I think I read somewhere that the latest BIOS for my mobo is protected/locked, so I need to understand if I downgrade the BIOS version assuming it's unlocked, what am I losing by doing so.

I started reading the guide for modding the BIOS but I lost track. It wasn't clear to me if the tools are compatible with my BIOS and if I mod my BIOS, will I be able to restore my saved profile/setting.

Regarding "Note that PCIe is full duplex so your motherboard should support 2000 MB/s read and 2000 MB/s write simultaneously for the PCIe 2.0 4x slot." - How can I verify this claim? I couldn't find anything to support that for my motherboard.

If I'm able to mod my BIOS correctly, I'm thinking of buying one of these:
1. Samsung 960 EVO 500 M.2 SSD
2. Intel 760P 512GB PCIe M.2 80mm
Unless you can recommend on something more optimised to utilise 2000 MB/s read and a something closer to 2000 MB/s write?

Thanks for the help

@gil:
Based on other's report, USB BIOS Flashback should work just fine for flashing modded BIOS and for restoring the original or even an older one.

You should expect all your settings to be gone. Although you probably will be able to restore settings saved to an USB drive, I recommend performing the changes again manually because save/restore is not always reliable/stable in my experience.

These are theoretical maximum bandwidths based on the claimed PCIe 2.0 4x support of the motherboard and derived from the PCIe specification, but unfortunately the only reliable way to verify it is to test it. Every layer on top of PCIe has some performance overhead, so you probably will get less than that. Also note that Spectre and Meltdown mitigations take a heavy toll on I/O performance.

High write performance usually comes with even higher read performance, so I don't really think that you will find a model with lower read performance and higher write performance. @Fernando probably has more experience with various NVMe models than I do.

Hi !

Thanks for a nice guide.

[Edit][solved] Had a problem that was an old Winrar-version

Another question is about raid. After this mod I cannot/shouldnt use raid at all?

Zitat von Fernando im Beitrag #3197

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Zitat von AAKEE im Beitrag #3196

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After this mod I cannot/shouldnt use raid at all?

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Who says that?
I haven't yet seen a proof for this statement.

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Zitat von Fernando

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4. The on-board Intel SATA Controller should not been set to "RAID" mode within the BIOS.

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If I understand this correctly I shouldnt use Raid on the intel controller, but if I also have another sata controller that can do Raid on the mobo, that would be ok?

Thanks Fernando, Ethaniel and EDK2 Team for this great work!

MB: Asus H87M-PRO (Intel H87)
BIOS: 2102 dated 2015-03-20
NVMe module: NvmExpressDxe_4.ffs dated 2018-04-18
UEFI BIOS modding tool: CodeRush's UEFITool v0.22.4
NVMe-to-PCIe adapter: OCZ ADSSD-PCI-M2-GR
SSD: Intel 760p SSDPEKKW512G8XT (installed to PCIe 2.0 x4 slot)

Bios patched, renamed to H87MPRO.CAP & flashed via ASUS USB Flashback.



After Windows 10 UEFI installation.



SATA Plextor M5S 256GB vs NVMe Intel 760p 512GB (PCIe 2.0 x4 slot)

vs

Patched ASUS H87M-PRO 2102 BIOS (7MB) - H87M-PRO-ASUS-2102+NVMe.zip

@Ethaniel
I updated my Z68 system to your Nvmexpressdxe_4 module and it went pretty smoothly. Can even boot by selecting PATA SS. Not sure if my original Nvmexpress driver allowed that or not.

In any case was looking in the Virtualbox Uefi Rom file and I found a Nvmexpress Dxe driver. Its only 19 Kb. I haven't tested it at all so if anyone wants to try it out do so at your own risk.
Looks like an EDK driver to me:
http://www.mediafire.com/file/srgnk7xgl4...essDxe.zip/file

Hi!

Can you help me? I have Asus Z87-a mobo. I have done the bios modding according to this video: https://www.youtube.com/watch?v=h_qRvvCWpWA (I cant find PcieLaneDXE line in my bios, so inserted under ProjectDXE) I did everithing as in the description flashed the bios (by afudos), turned off fast boot, secure boot and csm, but not working, cant find the nvme ssd in the boot section, I can see the ssd under the windows so its working. What is wrong???

Maybe if I send you the bios file, can you instert the nvme module for me? Big thanks!

@davidm71:
I'm glad that NvmExpressDxe_4 worked for you.

VirtualBox is using a fork UDK2014 that is very outdated and has the first stable release of NvmExpressDxe.

NvmExpressDxe_Small provides all the relevant features present in UDK2014 but also incorporates fixes and improvements up to UDK2018. Although I've removed component name protocol support to reduce size, your system would not use it because it always displays "PATA SS".

If you are looking for a small UEFI NVMe driver, NvmExpressDxe_Small is my recommendation over NvmExpressDxe from VirtualBox.

Note that NvmExpressDxe_4 is based on UDK2018 with no features removed, so it is larger.

Ok I uploaded my modded bios, can you check me pls? If the module not inserted to the right place, can you tell me witch line to add?