@Fernando:
Thank you for your patience, sir. The problem is I have Windows Server here which has running production with many settings in it's registry for about 15 users and installed lincesed software that would stop working if I choose to do clean install. It's very bad idea to reinstall it from scratch. If I am to find reliable way to make such conversion I'll post it here.
Anyway, thank you.

@Neutral67fr - you can skip steps 1-5, those are about how to get the variable, I gave you variable above so you can start on step #6

@daedalus - yes, I have already modified that BIOS with NVME module, it's modified and ready to flash. You will still need to follow step #4 closely on page one, about how to install to the NVME after flashing BIOS is done.

@Fernando
I've just managed to run Windows Server without reinstalling it on the new NVMe SSD. And I've found at least 3-4 ways to accomplish this task. I'm so happy, sir, thank you very much, Fernando, for your help, for this forum and for your thorough guide about modding UEFI to allow booting old machines from new and fast NVMe devices.
And thank you for this dopamine I'm feeling at the moment thanks to your how-to! )
I'm going to write a how-to later about cloning Windows Server (and any other Windows OS) from MBR rigged old HDD and make it running again.

Hello from Sunnyvale, California. This is my first post, and I'm looking to get a plextor pcie x4 512GB NVMe SSD to be bootable in my much beloved Asus Z87 Pro build with its nearly golden 4770k. Build this new in 2013 and have no need upgrade to a new computer, except for the want of a bootable NVMe drive. Here is where I'm at: Got the card installed and it runs at rated spec speeds (BLISTERING! 3200MB seqRd, 2100MB seqWt) under Win7 64 bit with the two NVMe hotfixes installed. I've cloned this SSD Win7 image to the NVMe, and have converted the clone's partitions to GPT. I've got a freshly formatted FAT32 8GB USB 2.0 with just a NVMe modded 1602 bios on it, all ready for the USB Flashback operation. But before I continue, I have a few question concerning possible nasty surprises or road blocks which may lay ahead. First off is I want to use the 1602 vs. 2103 bios. I've found that I could not dial in the OCs I use regularly with 2103. Will using the 1602 bios be a problem? Also, will I be so fortunate that my cloned, GPT converted, win7 NVMe, boots properly? And finally, once that NVMe modded bios is flashed to my mobo, will I still be able to select and boot non-NVMe MBR drives with it? My sincere gratitude goes to the awesome and incredibly helpful community here...donation will follow...THANKS for reading.

Thanks for the super quick response. I figured it might be a bit too good to be true to so simply convert an exist Win7 image into something NVMe bootable. I'll give it some more research, including considering if it's time that I finally move along to Win10. There is so much more I need to learn here! Thanks!

Hello, can someone help make a modified BIOS for ASROCK z77 pro 3. or at least write an instruction on how to do it.

You are on page 278. You need to be on page 1. That is where the instructions are. If you have a problem with the instructions, ask a question.

You can also contact Asrock tech support in Taiwan at Asrock_TSD@asrock.com.tw
They had an NVMe BIOS for my Z77 motherboard (not a Pro3). It may take them a few days to get back to you.

it's all clear I did everything as written on page 1, but due to the fact that the company ASRock kind of BIOS I can not find the files which are listed on page 1.

sorry for my English I know very bad

Dxe

@Mister Sotona - here is where the main BIOS volume is located in your Asrock Z77 Pro3 BIOS, NVME module goes way down to bottom where arrow is pointing (Like guide shows)

Hi @Fernando,

I have just registered to thank you for this great guide and the exhaustive compilation of information!

I had discovered this thread a long while ago but did forget all about it as, back then, I had no intention to switch to an NVMe SSD. In the second half of 2018, looking for information on the NVMe topic, I re-discovered this thread and read through it again. Finally, I decided to give it a try.

My system contains an Asus Rampage IV Formula equipped with an Intel Xeon E5-1680v2 and 32GB Corsair PC3-14900U. Modifying its BIOS (5001) was easy enough, following your guide and using the UEFITool from CodeRush. After renaming it to R4F.CAP it was flashed to one of the BIOS chips using the flashback procedure (chip #2 contains the original 5001 BIOS as a backup). Without any NVMe SSD connected I tested the system for several weeks until yesterday, when a package arrived, containing one Samsung 970 Evo Plus 1TB NVMe SSD.

After installing it using an Asus Hyper M.2 X4 Mini adapter it directly showed up as the expected "PATA SS:" in the BIOS, success!

The next task was a little trickier. Installing Windows 7 (I have a deep-felt hatred for Windows 10 and don't want it anywhere near one of my systems, but that's not relevant here)... In the BIOS, I changed the CSM options to "UEFI first" and then tried to proceed.

The following did not work for me:
Inserting the Microsoft hotfixes for native NVMe support into an installation image. Doing this left me with an empty drive/partition selection screen within the Windows 7 installer.

This, however, did work for me:
Using the old Windows 7 installation, I installed the latest Samsung NVMe drivers (3.1) and using the Double Driver application, I performed a backup of these drivers (Samsung NVMe controller). I included this driver on a USB flash drive, prepared for Windows installation (using WinSetupFromUSB and a regular Windows 7 SP1 image, Professional in my case). On the empty drive/partition selection screen within the Windows 7 installer I selected the backup of the Samsung NVMe driver, and after loading it, the NVMe SSD was usable. The installation went OK, without any issues.

I'll add benchmark results once the installation is finished, with all other drivers etc. But a quick run of the Samsung Magician internal benchmark already showed the ca. 3,5k MB/s read and 3,3k MB/s write values, and the drive was correctly detected as running on PCIe 3.0 x4 bandwidth. Luckily, on socket 2011 there are no issues with the amount of available PCIe lanes, compared to the mainstream platforms of that time.

Thanks again, with this guide, this little project of mine felt like a piece of cake!

Edit: I finally performed some benchmark runs, and attached the results.





Edit II: Uploaded my BIOS file in case someone wants to use it.