Excellent guide! Kudos to all that have helped to compile it!
Now I can boot from a 970Pro nvme M.2 SSD in a ASUS Maximus Gene V board with Z77 CPU. Thanks to the guide I managed to flash the modified CAP type BIOS and to restore my OS from a BIOS type installation of Win 10 to my SSD in UEFI which meant I didn’t have to reinstall the applications.
So happy!
M.

MSI 970A-G45 Rev1 with factory V2.8 bios
use samsung data migration to clone win10 to EVO
flashed modded bios
reset cmos
connect only the PCIe Adaptor with the EVO
reboot
no boot device

it is working now
I was missing step #4, re-install os in UEFI
Thanks for all the advise

@samana: If the mod was successful you should see an entry PATA or PATA SS in the BIOS once you switch it to UEFI. If yes you should then be able to install Windows 10 in UEFI mode on it after which it shows up as bootable in the BIOS (look for an entry “Windows Boot Manager”)
HTH,
M

Ah - you found it yourself. Cheers.

As You can see gigabyte newer BIOS updates for z97x
gaming behave diferent .if a nmve is the only drive works in ahci mode, but if there are are other Sata disk You should put it in raid mode and newer options Will arise, sounds like last minute patch over patch.
Not clear info from Gigabyte. I Saw many opted for modded BIOS which it is fair and simpler plus newer Roms for Sata and raid.

Zitat von Fernando im Beitrag #6376

---

When you do a simple data migration from your formerly SATA connected system drive running in AHCI mode to a PCIe connected NVMe SSD, you should not be surprised, that you cannot boot into the cloned OS anymore. Your NVMe SSD needs an NVMe driver and this information has to be given to the boot sector.

---

No, when u r simple using a NVMe without any OS in it, along other OS SATA disk, the NVMe is available as storage device specific manufacturer NVMe driver present or not. Not mandatory.
Its fails boot because some people connect the old SATA drive with OS still on it, (if it was cleaned for data, no problem on NVMe boot) and the bios windows boot manager,will boot again the old OS, instead of the NVMe
Cloning is a bad choice for a new OS in an NVMe, but possible.

Okay, thanks for the help. I will try to clone anyway.

Hello anyone can help me with mod bios for MSI P67A-GD65 (B3) version 4.3 and Asrock Z77 Pro 3 bios version 2.20? i read guide and i mod bios for z77 pro 3 . thanks a lot

Hi All.
I just followed the guide described. I hit few snags (bios didn't have option to disable fast boot/secure boot, rufus refusing to load the windows 10 image and windows getting confused about GPT disk)...but it somehow got fixed (I still don't know what happened but it started working fine after installing linux as a test when windows failed).

But in the end I managed to get it to install and boot so everything is fine.


There is however one question I'd like to get answer to if possible.
I had previously a 3 disk setup with windows RAID 0 on old ssd/hdd setup. Now in NVMe windows disks are not even showing up in Disk Manager within windows, while they are present within BIOS/UEFI. I connected old hdd back (disconnected nvme) and confirmed that drives are detected correctly and even raid works as it should without fixing it.

Is there a way to rediscover those drives or do i need to destroy raid and redo the setup.? Are there any other limitations that I can encounter?

Hi guys, I got a new laptop from a small chinese brand (Runs ryzen 5 3550h, aptio bios says june 2020 update)
It's got nvme slot, but the problem is it freezes on logo in bios if I use nvme (nvmes are new and working on a desktop), also freezes on a black screen if I try legacy boot.
Is there a chance this can help me?

@iluzek
Ur RAID 0 stripped volume its not the default OS and the NVMe isn't using the former RAID controller anymore, install RAID drivers/software chipset on new NVMe OS and maybe ull get access to it.

@tombfox
NVMe...u sure, u see a M.2 M type slot...only. I see a lot of HP laptop with it and they only support SATA SSD protocol, or some just to support Optane.