Thanks for help, your advices help me and now I can use full support of my new NVMe disk

Hello, so glad to have found this great forum. I was looking to install a SSD M.2 NVME but my motherboard MSI MS-7758 Z77A G43 does not have a M.2 port.

After reading some replies I found that a BIOS modification is necesary to activate the NVME support, if i am not wrong i can do this via MMTool and update it with the official software in BIOS. The question is: the motherboard has 1 PCIe GEN3 16x and 1 PCIe GEN2 4x, but i have a graphic card installed on the GEN3 port. If i mod the BIOS for NVME support will i be able to put a SSD with a PCIe adapter pluged on the GEN2 port? and does it will boot windows properly? I dont mind if i cant reach the full speed of the SSD.

Thanks!

Yes u can use GEN2 slot, depends on the adapter interface and the NVMe drive itself, but if u use a PCIe 3.0x4 adapter it may not achieve full performance as in a GEN3, still it works as it should.
In GEN2x4 u will have 5.0GTs and GEN3x4 8.0GTs bandwidth.
Also, PCIe 3.0 is only enable using an IvyBridge CPU, not a SandyBridge.

mine is a sandybridge, so it my PCIe only works as a 2.0? Even with the graphic card?

If u use HWInfo u can check by urself

Thanks!

Thanks for all the hints and tips to upgrade old motherboards to handle ssd's during boot process. As English is not my mothertongue, I apologize for my writing.
I am dealing with an Asus P9x79pro, Bios is P9X79-PRO-ASUS-4801.CAP
I followed all the described steps to modify the mentioned Bios and succeded somehow. However there a two points which worry me.
1) I extracted the "body" of bios and did the modification on the body succesfully. I marked the total body for copying and pasted it back into the original Bios. By this the Biosfile became appr. twice the size compared to original Bios, what seems to be logical; however is this correct (was unable to upload this version because even a zip-version is beyond 6MB)? I created a second version of of a modified BIOS by deleting that part of the file, which contains the old part of intel image (P9X79-MODred-ASUS-4801.CAP)
2) When looking into the modified Bios File with UEFI-Tool 0.28.0 at "informations" relatet to pe32 Image section of NvmExpressDxe_4 the related entrypoints seem to be incorrect, at least not logical: Imagebase at 0h is questionable and entrypoint at 314h is logical based on imagebase however questionable as well.

Thanks for a fast and helpful answer. In meantime I failed to flash that modified Bios to my ASUS P9X79PRO. With Bios flash back the blinking LED in the flash button stops immediateli after its first blink and remains continuosly on. A second try with ASUS EZ flash shows a security issue as expected. I tried with different USB Sticks, all properly formatted.
What I do not understand in the description of the flash procedure is the renaming process. I cannot find the mentioned renaming tool within the ASUS pages nor can I find information concerning "USB BIOS Flashback Rules", nor do I understand what that renaming process should to the modded Biosfile. Sorry for bothering, however I feel to be close to success.

Hy once more. I made it. Thanks to your second link I steped into a youtube video demonstrating an USB flash process (by the way I am familiar with USB flashing). Within this movie I saw a monitor in the background with a list of relevant names for BIOSes to be flashe to ASUS boards. So I was able to use the correct Filename and everithing went fine. SSD is available for booting.

I did not find any information concerning this name problem within the german ASUS pages.

Thank you again until the next problem

Hi Sir, in step 3 of #5904 Page 394 UEFI tool doesn't show offset I only get the following details when clicked on INTEL image as below:

Thanks for your reply Mr. Fernando. Checking the Descriptor region Details under the INTEL image offset in this case is 1000h.

Thanks Fernando, I apologize for asking you instead of Lost_N_BIOS. Perhaps its the UEFI tool that I am using. Your version is UEFI NE alpha 58 while the one i am using is UEFI 0.28.0. I have attached screenshots of my UEFI tool which shows differently. Anyways, thanks for your efforts and help. I really appreciate your prompt reply.