ROG G751-JY BIOS 211 NVMe Upgrade Guide Step by Step

[m33ts4k0z]

Hi guys,
Appreciate all the hard work.
The drive I got is ADATA SX8200pro 1TB, supposed to reach average 2300 read, 1800 write, I assume should be limited by pcie2.0x4. I have an issue with low bandwidth, after modding bios 213 with either nvme dxe 3 or 4, I have just 800 MB/s read/write. I have tried benchmarking from windows (Crystalmark), and from ubuntu disk manager benchmark, identical result. I have also tried removing all my drives and testing just the nvme drive from ubuntu on a USB stick. Tried using intel nvme driver instead of MS one under windows (I used intel 760p one, it has the same controller as SX8200pro). Windows installed on a SATA SSD in master slot, GPT partition table. Disabled legacy boot/secure boot in BIOS. Seems similar to what @Kliszczak got.

Attachment 85407

Hello,

you could try the tips described here.

Good luck.

[Gords]

I did this or a similar mod a few years back and still use it.

Today i wanted to look at someones windows install on a normal sata stick. The BIOS and Windows couldn't see it at all.

Does installing the NVMe bios module overwrite/remove the normal sata support?

Thanks.

[Clintlgm]

I did this or a similar mod a few years back and still use it.

Today i wanted to look at someones windows install on a normal sata stick. The BIOS and Windows couldn't see it at all.

Does installing the NVMe bios module overwrite/remove the normal sata support?

Thanks.

Well yes I think so, the bIOS mod would send the data tot he PCIe bus and no longer to the SATA bus they are two different data paths.

[m33ts4k0z]

I did this or a similar mod a few years back and still use it.

Today i wanted to look at someones windows install on a normal sata stick. The BIOS and Windows couldn't see it at all.

Does installing the NVMe bios module overwrite/remove the normal sata support?

Thanks.

No it doesn't. You don't remove anything from the BIOS. You just add a new module. I used my M.2 to test if it got recognised and it did, then I swapped back to my SATA samsung evo 860 and it booted normally. Also you can find configurations online or even in this thread of people using naked SATA together with M.2 on this laptop.

[fyremberano]

Hello, first of all I am but a noob so this may be a very obvious error, but I cannot seem to fix it.

I did the mod on my G751-JT BIOS ver. 213 and it worked, now my computer detects my Kingston A2000 as a bootable device. However, the Windows i install there just keeps crashing, sometimes even when installing. I have a separate windows installation in an HDD and that doesnt seem to happen.
I tried reinstalling windows, disconnecting the HDD and reinstalling windows all to no avail.

Might anyone know what the problem is?

[season_of_ages]

I apologise if this is a dumb question, but if I want to set up a dual boot system, is it possible after I've done this process? I'd like to install a Linux OS, perhaps Kali.

[chris_tronic]

I apologise if this is a dumb question, but if I want to set up a dual boot system, is it possible after I've done this process? I'd like to install a Linux OS, perhaps Kali.

You don't need to be afraid.
I'm running Windows and Linux as dual boot for a long time on different devices. My Windows is on the SAMSUNG EVO 970 M.2 NVMe and my Kubuntu is on the SAMSUNG EVO 850. And I experienced no troubles at all.
You only need to know were to install your GRUB Bootloader and which Boot Option you choose for initial start.
For example: I installed the Windows EFI Bootloader on my M.2 and the GRUB Bootloader on my SATA SSD.
Than I choose the SATA SSD BOOT Option and adjusted Grub for Multiboot.

Greetings

Chris

[Gps3dx]

Can confirm the OP guide is wonderful and working.
I finally was able to get my hand on my first NVME SDD - an HP EX950 2TB.
I modded the UEFI like 2 years ago but could only just today test it.
PROS: now I have extra storage in my G751JT (G-sync) - total of 4 storage devices: 1 Sata 3 HDD in DVD caddy (SATA II speed), 1 Sata 3 HDD regular slot (Sata II speed), 1 Samsung Evo 860 250GB (Sata III speed) + HP EX950 NVME in THE SAME SLOT.

You can see in my pic that I've improvise a caddy/housing for the NVME stick and that I've took the EVO 860 board out of its original housing ( like someone posted in the forum few years ago ).
I didn't see much difference between Samsung's NVME driver compared to windows 10 (2004) built-in driver, but it was still a bit faster.
The only CONS that I noticed after installing the NVME SSD is that when I restart, after all of the windows screens, there is a delay of ~10 sec during which I see a black screen.
Restarting eventually finishes and laptop do reboot itself.

another thing I noted is that no report is seen in the UEFI screens when NVME SSD is connected - not that I expect from a modded UEFI, nor need.


UPDATE 1:
Well I found out that all of my above reported experience with NVME ssd on my G751JT was using UN-MODDED BIOS 213 !!!
I did mod BIOS 211 and installed it, but forgot that I've upgrade to official UN=modded BIOS 213 since than.
Bios 213 DO NOT have "NVME" module ( at least not by that name when searching in MMTOOL) - but NVME drives WORKS !
Nontheless, I've modded BIOS 213 and injected 'NvmExpressDxe_4' module to the bios, than flashed it.
Results are, well... controversial:
BIOS 213 UN-MODDED ( w/ samsung controller driver )


BIOS 213 MODDED w/ 'NvmExpressDxe_4' module ( w/ samsung controller driver )

[Nayem33397]

THanks mate

[CrystalIIzation]

Hi all,

I am currently utilizing a 128 GB SSD which has been filled to the brim with windows updates thereby preventing me from upgrading to windows 10.
Consequently, I made the decision to buy a 1TB Samsung 970 EVO Plus, unaware that it was incompatible with the ASUS ROG G751JY.

I therefore stumbled upon this thread and therefore believed I found my saving grace.
I'd cloned my prior SSD with the windows 8.1OS and files over to the new SSD, alas I am currently still facing difficulties booting from the new SSD despite following the provided steps to MOD the BIOS in accepting NVMe SSDs.

The error which appears would be that windows would continuously attempt to diagnose the computer at boot up and end up being unable to find a solution before restarting in a continuous loop.

I was wondering if there were any BIOS settings which i should be particularly mindful of during the OS boot up?
Either that or would it be the case that I am to conduct a fresh windows installation on a empty drive? (I had attempted this with a windows 8.1 thumb drive but the installer states that the hardware is incompatible...)
Or would this be the case that windows 8.1 is entirely incompatible with this mod as well?

This is the first time that I am attempting to clone a OS drive and as such would like to seek any possible assistance in this matter.

Note: Utilized BIOS Ver 213 alongside the NvmExpressDxe_4 module in my installation of the mod.