I see in the bios the 8x slot has the x4x4 option. Anyone try that slot to use 2 NVMe drives ?
I am thinking about a card like this
https://www.amazon.com/gp/product/B09F31ZXKQ/ref=ox_sc_saved_title_1?smid=A1YVSYXQX2ABEU&psc=1
thanks
Custom Bios Flashing P9X79,
I changed the name of the custom bios to a stock bios cap name. Used a 2 GB Fat 32 formatted drive, inserted the drive in the lower USB next to the bios button. Then, I turned off the computer and push the bios button till the light started blinking. If that does not work unplug the power supply and try the same.
Yes, that the method for flashing the mod, using Asus Bios Flash Back function when the motherboard model has it. Nothing new… and its stated here: [Guide] How to flash a modded AMI UEFI BIOS
Hi
I know this is an old tread but I would like to use my Asus_P9X79_LE With an NVMe boot drive if possible. My current configuration is a i7 4960k, 32 GB RAM & an Nvidia GeForce 710. I would kie to use it with a legit version of Windows server 2016 in a home lab. I would like a 4 tb NVMe drive if Possible. I don’t know if the BIOS above works with my variant & don’t want to learn the hard way. I would appreciate any info on this and adapter compatibility. I don’t know much about this and any help would be appreciated. Thanks in advance Berg
Hi Any chance this could be modified for a P9X79_LE I would be most greatfull
Berg
Bios flashed, can see the ps option…
however when I try to do a fresh install no matter what options I choose it freezes… any ideas? I can access the drive under my normal windows install on a ssd.
@cobra11murderer
[HowTo] Get full NVMe Support for all Systems with an AMI UEFI BIOS - Special Topics / NVMe Support for old Systems - Win-Raid Forum (level1techs.com)
Point#4 for OS installation, nevertheless the guide should be read in full to understand whats behind the mod and procedures for testing/settings.
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I successfully Flash my BIOS with the two modded ones available on this post:
So I thought OK I can try this out and bought an EVO 970 PLUS plugged in a 1x slot SABRENT PCIe interface
Thanks to @shawn I’ve decided to migrate my existing Win7 OS from MBR to GPT
So I did install the Windows6.1-KB2990941-x64.msu to see the MVMe in Win7 + cloned my system with AOMEI BackUp with option convert MBR to GPT
At BIOS boot menu I was able see the EVO 970 PLUS but without being able to reboot on it:
Eventually I used AOMEI Partition Assistant Pro to convert my SATA system from MBR to GPT with the intention of cloning after reboot.
But I can not reboot anymore
I must have miss something…
Thanks for your help!
Hi Hancor,
I am using your modded BIOS with a windows 7 system installed on a SATA drive. I did convert the SATA drive from MBR to GPT with AOMEI (Windows PE) and then I have cloned it to an NVMe drive installed on the last PCIe port of my P9X79 board.
I’ve followed you advise on disabling CSM in BIOS but I do not manage to boot on the "Windows Boot Manager (Samsung SSD 970 EVO Plus 2TB S4J4N)
I have the same result when I am activating CSM and set “Boot from PCI-E/PCI Expansion Devices” to UEFI
Would you have any tip to help me progress on this?
Thxs!
You cloned a LEGACY OS…just that.
You converted the legacy OS disk from MBR file system to GPT and cloned it to another disk, simple as that, you didnt have a UEFI ready OS and even worst…the good old 7, that received support for NVMe later on, with hotfixes.
Take the guide advice, getting the most performance of a NEW CLEAN OS Install/
Thxs for your feedback Gents! @MeatWar & @hancor
My goal is to avoid reinstalling a new OS and all the software install hustle that goes with it (on an offline PC). Thus the win7 OS migration is my goal.
I sure I did install hotfixes for win7 prior to cloning:
Windows6.1-KB2990941-x64.msu and windows6.1-kb3087873-v2-x64.msu
I even tried out the Samsung NVM Express Driver 3.3 + the data migration tool that goes with it (I am using a EVO 970 PLUS)
But I can not boot after various cloning attempts (AOMEI Backupper):
- Disk Clone from MBR to GPT
- Disk Clone from GPT to GPT
- System Clone from MBR to GPT
Also for each clone attempt I tried the set the CSM BIOS parameter “Boot from PCI-E/PCI Expansion Devices” to “UEFI driver first” (while “Boot Device Control” is set to “UEFI and Legacy OPROM”, “Boot from Storage Devices” set to “Both, UEFI first” and “Secure Boot” on “Windows UEFI mode”)
But not much success either…
Here are my boot options:
I must be missing something to make Win7 UEFI ready but don’t see what.
Any tips would help, thxs!
Eventually I did update my win7 to win10 and was able to keep my program installed and runnin’.
Hats down to you guys @hancor, @Fernando and All from WinRAID Forum for prolonging the life of our hard earned PC hardware with modern performances. You rock.
Best!
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Should just note that it’s easier to use a samsung nvme drive vs crucial (which would need the bootloader software)… my crucial couldn’t work properly even with the bootloader option offered… so, I bought a samsung 970 that addressed the issue and is now working no problem and no need to mess with the bootloader stuff
@cobra11murderer
Im not sure what you’re talking about here, a boot loader is used when the user doesn’t want to mod and flash the bios with the NVMe mod, like Clover for ex. that can load the DXE NVMe driver.
Now if you’re talking of a Boot Rom, the 970 EVO also doesnt have one, as long i can remember, only the 950 Pro and for this model, bios mod is not an obligation.
Anyway, glad you succeed
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sorry when I meant boot loader I mean using something like clover to boot… for the crucial p5 plus no matter what you did it would freeze the system… I flashed the other bios’s in this thread as well to try and address it. It just wouldn’t take. I believe the samsungs have a chip that helps booting idk for certain I saw it on a different forum somewhere. In any case thanks its been great ever since… the crucial is gonna end up in my buds laptop for Christmas so thats a win win
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@lotny @MeatWar @cobra11murderer
Given the interest here’s the latest mod BIOS with updated NVMeDxe5.Ffs insert.
ROM EFI updates
Microcode updates
Compressed BIOS/UEFI file below:
P9X79.rar (4.2 MB)
As always back up your data & enjoy! 
1 Like
Does it fix problem with Crucial P5 Plus? Is any way to fix it available yet?