Time for an update: @onemoar @Fgars2 @f0nz0 @zeroTolerance @

Module detect shows NVMe mod:

NVMe functionality via ------> NvmExpressDxe_4.ffs inserted after CSMCORE for this Aptio IV UEFI/BIOS via
[Guide] How to get full NVMe support for all Systems with an AMI UEFI BIOS






EFI ROM modules updated:



Microcode update to v28 mitigates MDS, Spectre and Meltdown vulnerabilities, with least performance impact.




Using the UBU v1.77 - with UEFITool v28 I also upgraded the following:

EFI IRST RAID for SATA 12.7.0.1936 ----> 14.8.2.2398
EFI GOP Driver Haswell 5.0.1036 ----> 5.5.1034
EFI Intel Pro/1000 UNDI 5.4.19 ----> 0.0.29
EFI Realtek UNDI 2.020 ----> 2.053
CPU microcode 19 ----> 28 (most recent for MDS, Spectre, & Meltdown mitigation)

Should result in very stable and reliable NVMe boot drive and system for "ancient" Asus MAXIMUS VI GENE mobo; BIOS version 1603 mobo sporting an Aptio 4 BIOS/UEFI; which should now run like a top on the latest Windows 10.

Use BIOS FLASHBACK method, check your manual at page 2-17.

Remember to create, via Rufus, a DOS FAT32 bootable USB and flash the unzipped file.
(see Fernando's instructions)

LATEST EDIT: July 22, 2020

Greetings

Thanks for the updated BIOS, I flashed it to my motherboard but unfortunately there's no POST. The hard drive activity LED keeps blinking rapidly and there's simply no POST screen.

I reverted back to the previous modded BIOS and everything is back to normal again.

I appreciate the time and effort you've put into this.

Thanks

Same problem for me

Ok I think I know what the problem may be...stay tuned.

Cheers

@onemoar @Fgars2 @f0nz0 @zeroTolerance @ImLasse @FASE

Okay, re-modded the Maxiumus Gene VI BIOS/UEFI v1603 using the manual MMTool v4.50.0.23 method as shown in the screenshot in post #16. LATEST EDIT: July 22, 2020

Hopefully that should meet with better success.


Cheers

Thanks for the update, system boots normally and everything seems fine, i'm using a 2.5" SSD as a boot drive now cause I moved the M.2 nvme drive to another system. Thanks again for your help :)

Thanks, it works :)

@ImLasse

Delighted that it is working for you!

Cheers

I no longer own this board sorry but the previous mod was still working flawlessly

@hancor

Thank you for the information. Is the attached MG6.CAP file already modded? I do see the NvmExpressDxe file in MMTool but I am still having difficulty recognizing or booting from the NVME after seemingly flawless BIOS flashes.

...backstory: I have a Sabrent Rocket NVME PCIe M.2 2280 SSD installed in the second PCIEx16 lane on my Asus Gene VI mobo. My initial BIOS mod and Windows installation via the instructions went well and I was running on the SSD with expected speeds. However, before restarting/booting from only the NVME SSD, the PC BSODed and now I cannot get the BIOS to to recognize or boot from the NVME. Do I need a Samsung SSD or is the Sabrent okay? Any help is much appreciated!

@w_km

Most up to date modded file is found in post #16 of this thread.

Remember to set CSM(Compatibility Support Module) to DISABLED in your BOOT TAB.

Also unhook ALL your other drives, when doing the first OS install.
Further, when you rehook up your other drives you may have to convert them all from MBR drives to GPT (Gui Partition Table) otherwise they won't be recognized.

To see why MBR and GPT drives don't play nice together, and what you should see with "Windows Boot Manager" see post #356 in the link below!
All the hair pulling has been done for you...

[Guide] How to get full NVMe support for all Systems with an AMI UEFI BIOS (24)

I've used the Samsung NVMe SSDs 950 Pro without issue now for well over five years installed in an Asus Z87-Deluxe.

I'd recheck your drives to ensure you've converted them all properly to GPT otherwise you won't be booting off the NVMe drive.

If all else fails, reflash and do a clean install!

Let us know how it goes....

Cheers

@hancor

Yep CSM is disabled (I also tried it with CSM enabled according to Fernando's guide). No other drives were/are attached (never reinstalled them). The initial install was GPT according to the guide. I have tried re-flashing but the NVME is still not detected. Furthermore I cannot reinstall windows onto the NVME (drive is not detected during install), nor can I see the NVME drive using the command tool diskpart (via the windows install boot drive). The system boots fine if I reinstall my SATA SSD. What am I missing?

@w_km

you may have a bad NVMe drive...time for warranty replacement?