Harry, your suggestion was the key absolutely as I am typing this right now from my Server 2008 R2 install from the NVMe drive!

Just for the record I would like to document this properly in case anyone comes across it:
http://support.microsoft.com/kb/975535/
These three supporting hotfixes were integrated too using NTLite but I am not sure that they are required: KB979374, KB2990941 and KB3087873.
The only fact that I know is that KB975535 was the absolutely critical hotfix to solving this and the manual integration steps on the KB page must be followed as it is a .cab file and cannot be simply integrated using NTLite.
If you're wondering how to get the obscure programs noted in the hotfix "OSCDIMG.exe" and "ETFSBoot.com", they are in this package:
https://www.microsoft.com/en-us/download...ls.aspx?id=5753
I used the AMD64 versions of these files, of course.

The BIOS Settings were NOT set to "Disabled CSM" as the error noted previously occurs. Server 2008 R2 WILL NOT fully support the CSM Disabled Full UEFI, but it doesn't matter anyway.
It will work with the "CSM Enabled" and "UEFI Driver Load First" option.

The easiest way is to get the Samsung NVMe drivers on the install USB key so you can just load them during the initial setup as even integrating the drivers to the install DOES NOT make the NVMe drive appear magically. They must be manually loaded and then the drive will appear.
After that, no special steps, Windows installs successfully then when it reboots, the "PATA SS:" option that was originally in the BIOS turns into "Windows Boot Manager (Samsung..... etc)".

@Fernando
Hello there. I tried to mod bios for Asus Rampage III Extreme x58 mobo but i fail at the very begining... When im trying to open the lastest bios file from Asus site (RampageIII-Extreme-ASUS-1502.ROM) in UEFITool im getting im getting "UEFI volumes not found" error. Does it mean that this mod cant be done for that mobo?

@Fernando and @davidm71:
I was able to create a small NvmExpressDxe driver significantly reduced in size.
Could you please help with testing and providing feedback on the results.

Hey Fernando, been put onto you by a bloke who got his Z68 modded to run NVME etc. This is the first I have heard of it.
I run an Asrock Z68 Extreme7 Gen 3 and 2600K.
I would love the support added for all the good stuff!
Apologies if this has already been done, I did a forum search for my board and came up empty for this result.

>Zel- I tried having a life once. But when it asked me to pay $2.99 for more features I uninstalled it.

Hi Everybody,
First of all, I want to express my admiration for this wonderful forum, complete with useful guides and to ask for your help in solving my problem.
I'm trying to install SSD Toshiba THNSN5256GPU7 NVMe PCIe M.2. at the ASUS ROG STRIX b350-f GAMING motherboard. The SSD drive is not visible in BIOS and Device manager. I tried to follow the first page guide and modify the bios, but when I opened the BIOS file with UEFITool, I not see the "BIOS region", and in the bottom end of the program window there is "parseBios: one of volumes inside overlaps the end of data" message.
Where I am wrong?

I apologize if I have written on the wrong topic. I will appreciate if you point me where to look for a solution to my problem.

Regards!

Dear friends,

I need help. I would like to add Nvme support on Asus Sabertooth 990FX R.2/GEN3.?

- Asus Sabertooth 990FX R.2 have Nvme support and Pci-e boot with last bios version 2901. Previous version of bios is 2501 (no Nvme). This motherboard have Pci-e 2.0 (not enaugh for full speed Samsung 960 pro).
- Asus Sabertooth 990FX R.2/GEN3 have Pci-e 3.0, but Asus dont make 2901 bios version for this motherboard (No Nvme support). Last bios for this motherboard is 2501.

Can I flash Sabertooth 990FX R.2/GEN3 with 2901 version? Is it safe?
If that is not possible can I insert modules (Nvme, NVMEINT13 and NvmeSmm) from Sabertooth 990FX rev2 bios 2901 to bios 2501 of Sabertooth 990FX rev2/GEN3?
There may be another way?

Sincerely