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Hi everyone, I'm a new member of this community and I recently obtained a ASUS P6T motherboard and a X5675. I'm currently running into the issue with installing Windows 10 not getting pass the blue logo. I did some investigation and in order for me to boot up from Windows 10 installer, I needed to disable VT-d, but I need that feature as I plan to run Unraid with this motherboard and run Windows 10 VM. Any recommendation on how I should proceed?

Spec:

Mobo: ASUS P6T
CPU: X5675
RAM: 3x8GB Kingston HyperX
BIOS Ver: 1408 + spectre/meltdown patch
Can you disable it, install and re-enable?
 

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Hi everyone, I'm a new member of this community and I recently obtained a ASUS P6T motherboard and a X5675. I'm currently running into the issue with installing Windows 10 not getting pass the blue logo. I did some investigation and in order for me to boot up from Windows 10 installer, I needed to disable VT-d, but I need that feature as I plan to run Unraid with this motherboard and run Windows 10 VM. Any recommendation on how I should proceed?

Spec:

Mobo: ASUS P6T
CPU: X5675
RAM: 3x8GB Kingston HyperX
BIOS Ver: 1408 + spectre/meltdown patch
I did some research on this issue some time ago but haven't found a workaround to get it working (hence only disabling this feature would let you install Windows 10). As far as I remember this was a BIOS implementation issue hence only ASUS could fix it. But it could also be a hardware issue, I remember some dmesg-entries in Linux while installing a distribution with VT-d enabled.
 

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Hey guys! This is a short introduction to my mod for my Asus P6T Deluxe V2 which I have crossflashed with a modded P6X58D-E BIOS. This allows me to use a much newer Intel Option Rom (OROM) for my 2 x 2TB SSHDs in RAID-0 and contains the option to use a voltage offset (which the original BIOS did not have). Thus I am now able to use my Xeon E5645 @ 2.4 Ghz @ 1.03 V at idle (runs @ 3.8 Ghz @ 1.18 V under load). Also thanks to the new OROM I get better results for my SSHDs. Use it at your own risk, you'll find the necessary tools here : https://drive.google.com/open?id=0Bx1_m8WSFFfeamt1b201Q1RQS00

(Update:) As I have upgraded my CPU to a X5650, I have also uploaded a modified P6TWS Pro BIOS with the newest Microcode, but with an older 10.x Intel Option ROM with TRIM support though.

Advantages: 1) High TDP lets you overclock beyond the TDP limit of your CPU, 2) Turbo mode can be disabled, 3) unbuffered ECC-RAM support (works with the other BIOS in non-ECC mode as well)

Disadvantages: 1) No dynamic voltage regulation, 2) no newer Intel Option Roms beyond 10.x, 3) Firewire does not work

What's new?
mod153mc2.rom

- much newer Microcode (from June/August 2015) for Nehalem and Westmere CPUs (CPUID: 06A4, 06A5 and 06C2), deleted support for engineering samples (CPUID: 06A0 and 06C0)
- Intel Option ROM: 8086-2822_v15032675.bin (tested and works with my 2x 2 TB SSHD RAID-0, also got it to work with the newer 8086-2822_v15102545.bin and versions below, all OROMs newer than that fail to load the RAID array due to size)
- deleted the ASUS splash screen

The mod153mc3 version contains all of the above and additionally uses a modified Marvell LAN Option ROM (same version 11ab-4380_v66813.bin) which is untested and might not work due to size.

What is known not to work?
- the top PCIe x4 slot doesn't work anymore
- ASUS Express Gate is recognized as a *HiSpeed* USB Mass Storage Device, which can be disabled in Windows
- the CPU TURBO cannot be disabled

Flashing process:
Assuming you are currently on the stock BIOS of your P6T Deluxe V2, you'll need to flash the new P6X58D-E BIOS with an engineering version of AFUDOS. EZFlash won't accept it! The file provided here is AFU236U.exe and will do the job.

1.) You'll need a bootable USB stick with the aforementioned AFUDOS version and the BIOS file. Make sure that it runs in HIGHMEM mode or you'll get an error while trying to flash the BIOS. Some USB-Boot-Tools fail to do so.

2.) Assuming you are in the right directory where the files are located type the following into the command prompt (*it promptly will start the flashing process without further warning*)

afu236u /iBIOSFILE /pbnc /n

Notice that there is no space between the /i and the name of the BIOS file.

3.) After restart, you should be greeted with the new BIOS.


*updated both BIOS files with new Microcode for Nehalem and Westmere from May 2018* --> mod156 for the P6X58D-E / the p6tws4 for that board.

Hey so I just picked up a p6t deluxe v2 to play around with and I see that you have mod156.rom and p6tdeluxev2_mod_2.rom, what are their differences? Which one should I flash to?
 

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Hey so I just picked up a p6t deluxe v2 to play around with and I see that you have mod156.rom and p6tdeluxev2_mod_2.rom, what are their differences? Which one should I flash to?
Greetings! Sorry for the confusing naming scheme. The first one is P6X58D-E BIOS with an Intel option ROM from the 15.X family. The p6tdeluxev2_mod_2.rom has newer microcodes and OROMs, but is otherwise the standard P6T Deluxe V2 BIOS.

Which one should you flash to? It depends a bit on your preferences and your CPU, I personally was using the P6TWS4.rom for the last year. The P6X58D-E BIOS has some disadvantages of which the always locked in turbo multiplier was the biggest problem and caused instabilities for me. If you have one of the lower speced Xeons with a turbo multiplier below 20, this shouldn't be a problem. But for the X5650 and above, I'd recommend the P6TWS BIOS. Even though it only supports older Intel OROMs, I worked around my issues with it (adding a SSD as boot drive). It also supports unbufferd ECC, and if you've got a mouse with LED, it supports ErP energy savings that turns the USB slots off if your PC is shutdown.
 

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What is known not to work?
- the top PCIe x4 slot doesn't work anymore
- ASUS Express Gate is recognized as a *HiSpeed* USB Mass Storage Device, which can be disabled in Windows
- the CPU TURBO cannot be disabled]


Hey, I have a question to ask. I successfully crossflashed my P6T Deluxe Rev 1. to P6T WS PRO 1205 and noticed that one of PCI slots doesn't work anymore. Can someone confirm this issue as well? According to a guide is known that only PCIe x4 should be "dead".
 

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Hey, I have a question to ask. I successfully crossflashed my P6T Deluxe Rev 1. to P6T WS PRO 1205 and noticed that one of PCI slots doesn't work anymore. Can someone confirm this issue as well? According to a guide is known that only PCIe x4 should be "dead".
First, I don't know if my mod would work on your board revision at all, as I have the second revision. Second, I haven't tested with any PCI cards so it is possible that there are additional problems which are not mentioned there. As I used to have a old PCIe sound card, I just verified that the slot above the PCIe graphics slot did not work hence I had to put it somewhere else.
 

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Hello i have this motherboard with 6x4 komputerbay 1600mhz non ecc unbuffered memory, and x5680, im having a lot of problems with this setup, if i put all the ram i keep getting memory management bsod, with 1 stick kingston 1333mhz everything works, when testing with aida64 I get hardware failure, anyone know if updating to a custom bios might fix it?
 

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Hey, I have a question to ask. I successfully crossflashed my P6T Deluxe Rev 1. to P6T WS PRO 1205 and noticed that one of PCI slots doesn't work anymore. Can someone confirm this issue as well? According to a guide is known that only PCIe x4 should be "dead".
I just flashed the WS Pro BIOS on my P6T deluxe V2 and can confirm that there are PCI IRQ issues when using multiple PCI slots. I had to remove the GPU I used for 2nd screen, installed in the lowest PCI slot. (not a problem as I figured out how to correctly enable HDMI audio through multiple outputs on my main GPU)


So far we can confirm that at least the top x4 and bottom x16 slot do not work when a card is installed in the main x16 slot, on both the V1 and V2 mobo. Hardy, were you using other PCI slots as well? It would be good to know if a WS Pro crossflash actually only allows a single PCI card.



First, I don't know if my mod would work on your board revision at all, as I have the second revision. Second, I haven't tested with any PCI cards so it is possible that there are additional problems which are not mentioned there. As I used to have a old PCIe sound card, I just verified that the slot above the PCIe graphics slot did not work hence I had to put it somewhere else.
First off thanks for your work. Flashing a raw WS pro 1205 bios always seemed sketchy to me and it's great to have updated microcodes, even though I run fast and loose with no spectre or meltdown protection.


I was having some confusion following the flash instructions on your post on page 37. What worked 100% for me was simply using unetbootin to create a FreeDOS 1.0 bootable USB, and selecting "Live CD...With HIMEM" when booting into the USB. Next all I had to do was cd C:\ to reach the main USB drive and execute the "afu236u /i[BIOS file name].rom /pbnc /n" command. This was with the AFU236U and bios file placed directly into the USB card, not in a subfolder.

Your post is the most referenced thing when searching for P6T flashing, could you please update it to remove old info and clarify/simplify the process?
 

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X5670 problems

Hi everyone!

I have a P6t Deluxe mobo paired with a xeon L5640 and it works fine but i want to change to a xeon X5670 instead because of the higher clock speed.

The problem is that when i put in my X5670 the computer won't even post. The screen is just black but all the fans and the pump is running.

I have updated the bios to the latest.

I have switshed back and forth two times.

I have cleared CMOS and used different ram sticks.

I have seen a lot of people using this combination of hardwere so that should not be a problem.

If you know something that might help please let me know. Thanks in advance!
 

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I just flashed the WS Pro BIOS on my P6T deluxe V2 and can confirm that there are PCI IRQ issues when using multiple PCI slots. I had to remove the GPU I used for 2nd screen, installed in the lowest PCI slot. (not a problem as I figured out how to correctly enable HDMI audio through multiple outputs on my main GPU)


So far we can confirm that at least the top x4 and bottom x16 slot do not work when a card is installed in the main x16 slot, on both the V1 and V2 mobo. Hardy, were you using other PCI slots as well? It would be good to know if a WS Pro crossflash actually only allows a single PCI card.




First off thanks for your work. Flashing a raw WS pro 1205 bios always seemed sketchy to me and it's great to have updated microcodes, even though I run fast and loose with no spectre or meltdown protection.


I was having some confusion following the flash instructions on your post on page 37. What worked 100% for me was simply using unetbootin to create a FreeDOS 1.0 bootable USB, and selecting "Live CD...With HIMEM" when booting into the USB. Next all I had to do was cd C:\ to reach the main USB drive and execute the "afu236u /i[BIOS file name].rom /pbnc /n" command. This was with the AFU236U and bios file placed directly into the USB card, not in a subfolder.

Your post is the most referenced thing when searching for P6T flashing, could you please update it to remove old info and clarify/simplify the process?
Thanks for your feedback, I will update my post to clarify that point.
 

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This thread is very long, I'm quite excited to find it.

It was brought to my attention today that I could upgrade the i7 920 in my Asus P6T Deluxe V2 to a Xeon. I had no idea that it was still possible to get CPU's that fit in the 1366 socket!

That said I'm a bit confused by the large number that I can find on i.e. Ebay. The last few pages of this thread has been confusing as well - all the custom flashing of BIOS. Is there a guide that I could be linked to?

Cheers
 

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I can't believe this thread is still going at 10 years old!
My P6T setup is still so fast I can't justify spending $ to upgrade.
 

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Hello, have someone any ideas?
MB: P6T deluxe v2

I have now tried the first P6T-WS-ASUS-PRO-1205. i7 ok, xeon no.
Then p6tws4. i7 ok, xeon no.
Then mod156. i7 ok, xeon no.

only the fans run with the xeon, but i have no picture.
 

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Hey guys! This is a short introduction to my mod for my Asus P6T Deluxe V2 which I have crossflashed with a modded P6X58D-E / P6TWS Pro BIOS. The former allows me to use a much newer Intel Option Rom (OROM) for my 2 x 2TB SSHDs in RAID-0 and contains the option to use a voltage offset (which the original BIOS did not have). Thus I was able to use a Xeon E5645 @ 2.4 Ghz @ 1.03 V at idle (runs @ 3.8 Ghz @ 1.18 V under load). Also thanks to the new OROM I get better results for my SSHDs. Use it at your own risk, you'll find the necessary tools here : https://drive.google.com/open?id=0Bx1_m8WSFFfeamt1b201Q1RQS00

(Update:) As I have upgraded my CPU to a X5650 / X5675, I have also uploaded a modified P6TWS Pro BIOS with the newest Microcode, but with an older 10.x Intel Option ROM with TRIM support though.

Advantages: 1) High TDP lets you overclock beyond the TDP limit of your CPU (this is beneficial to OC CPU's with a low TDP), 2) Turbo mode can be disabled to increase stability, 3) unbuffered ECC-RAM support which increases stability (unbuffered ECC RAM works with the other BIOS in non-ECC mode as well)

Disadvantages: 1) No dynamic voltage regulation, 2) no newer Intel Option Roms beyond 10.x, 3) Firewire does not work 4) possibly some of the PCIe x4-slots may not work 5) same ASUS Express gate issue as stated below

What's new?
mod153mc2.rom

- much newer Microcode (from June/August 2015) for Nehalem and Westmere CPUs (CPUID: 06A4, 06A5 and 06C2), deleted support for engineering samples (CPUID: 06A0 and 06C0)
- Intel Option ROM: 8086-2822_v15032675.bin (tested and works with my 2x 2 TB SSHD RAID-0, also got it to work with the newer 8086-2822_v15102545.bin and versions below, all OROMs newer than that fail to load the RAID array due to size)
- deleted the ASUS splash screen

The mod153mc3 version contains all of the above and additionally uses a modified Marvell LAN Option ROM (same version 11ab-4380_v66813.bin) which is untested and might not work due to size.

What is known not to work?
- the top PCIe x4 slot doesn't work anymore
- ASUS Express Gate is recognized as a *HiSpeed* USB Mass Storage Device, which can be disabled in Windows
- the CPU TURBO cannot be disabled


Flashing process:
Assuming you are currently on the stock BIOS of your P6T Deluxe V2, you'll need to flash the new BIOS with an engineering version of AFUDOS. EZFlash won't accept it! The file provided here is AFU236U.exe and will do the job.

You'll need a bootable USB stick with the aforementioned AFUDOS version and the BIOS file. Make sure that it runs in HIGHMEM mode or you'll get an error while trying to flash the BIOS. You can use unetbootin to create a FreeDOS 1.0 bootable USB stick, and select "Live CD...With HIMEM" while booting. Next you need to type "cd C:\" to reach the main USB drive and execute the "afu236u /i[BIOS file name].rom /pbnc /n" command. This was with the AFU236U and BIOS file placed directly into the main directory on the USB stick, not in a subfolder. After restart, you should be greeted with the new BIOS.


*updated both BIOS files with new Microcode for Nehalem and Westmere from May 2018* --> mod156 for the P6X58D-E / the p6tws4 for that board.

*added info how to create a bootable USB stick* December 2019

Hi friend, how u doin?

I need some help here, i just got a p6t dlx v1, and I have some questions about.
The only way to support a X5675 and fixing the High TDP issue is doing crossflashing?

And its possible to edit de special bios 0006 to support the Xeon? Because I really dont wanna lose some PCIE slots.
Ah, another thing, if I crossflash the bios to P6X58DE, the 512mb memory onboard will be capable of booting was a flashdrive? I want to use a NVME drive with PCIE card adapter to boot windows with Clover bootloader, the Idea is using this onboard usb flash memory to install the bootloader and avoid any needs of SATA driver or USB stick.
 

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Hi friend, how u doin?

I need some help here, i just got a p6t dlx v1, and I have some questions about.
The only way to support a X5675 and fixing the High TDP issue is doing crossflashing?

And its possible to edit de special bios 0006 to support the Xeon? Because I really dont wanna lose some PCIE slots.
Ah, another thing, if I crossflash the bios to P6X58DE, the 512mb memory onboard will be capable of booting was a flashdrive? I want to use a NVME drive with PCIE card adapter to boot windows with Clover bootloader, the Idea is using this onboard usb flash memory to install the bootloader and avoid any needs of SATA driver or USB stick.
As I haven't tested the mod on a P6T Deluxe V1 I cannot tell if it would work at all but for my P6T Deluxe V2 using the P6TWS Pro bios was the only reliable way to fix the High TDP issue. I also never tried to boot an NVME drive with a PCIe card adapter but from reading about it this was only recommended on some older Samsung NVMe drives which provided an OptionROM to get to boot from it. There are some crazy workarounds out there with a USB flash drive which fakes an UEFI environment, but I haven't looked into it myself. The only practical use I had for the onboard flash drive (which you could also use with the P6TWS Pro Bios) was using it for a Linux bootloader, but I don't know if it would suite your use case. The tiny size is quite limiting.

By the way, I no longer own that board.
 

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Is there a good tutorial on crossflashing the asus p6t vanilla bios to p6t ws and is it a good idea? Most of the links I found are dead now. Also if I have a higher multiplier will it help keep voltages down after flashing? I've been able to oc my x5670 to 4.5-4.6ghz stablish at 1.39V on the vanilla bios.
 
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