Zitat von Fernando im Beitrag #6495

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And then? What happened during the first reboot? Can you now boot off the NVMe SSD? Is there a "Windows Boot Manager" listed within the "BOOT" section of the BIOS?

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Took a while to get back to this (my day job kept getting in the way) but finally I got it to work... sort of.

I'd been trying to get a shiny-new Samsung 980 Pro to work as an boot device on this ancient ASUS P8Z77WS (new old stock) and was getting nowhere, despite the UEFI appearing to recognize it.

Finally, and as a last resort, I got hold of a Samsung 970 EVO Plus, and went through the same process of imaging the source boot disk to it, and... it worked!

I have no idea why the 980 refused to cooperate as a boot device, while the 970 had no such problem, and can only assume it's something specific to the combination that causes the windows boot to fail. It's perhaps notable that the 980 does not have any drivers available, so perhaps there are some assumptions being made regarding compatibility that my old system doesn't meet.

@Fernando:
I booted off USB flash drive in UEFI mode. I turned off Legacy boot mode at all.

Fast boot option was disabled.
About Secure boot, I cam not sure. In my BIOS these options are under “Windows 8 feature” menu. Should I enable or disable it? When it enable I can see secure pot options:
- system mode = setup (read only)
- secure boot = not active (read only)
- Secure boot support = disabled (I can toggle to enabled)
- secure boot mode = standard (I can toggle to Custom)
I think these options mean that secure mode is disabled. Please, let me know if I’m wrong here.

Other disks were disconnected. I was able to select NVMe disk for the installation and it was a single disk here.

I will try to install OS again and let you know if some errors will displayed.

I tried again several times with different options and I got the result every time :'(
There are no errors during installation but it can't boot off the NVMe disk

Also I tried this guide: [Guide+Video] How to install windows on NVME SSD 960 EVO without clover on a board without NVMe support.
But it doesn't help.

@Fernando: I'd really appreciate it if you'd take a look.
There is the archive with both BIOSes: https://drive.google.com/file/d/1IL0RFgy...iew?usp=sharing
There is the screenshot showing which exact file I added: https://drive.google.com/file/d/16_Fdu95...iew?usp=sharing
(left side - original BIOS, right side - modded BIOS)

I was expecting this already @Fernando his mod bios has no NVMe module inserted

My Bad :(
I copied the wrong file.
https://drive.google.com/file/d/12eUepj9...iew?usp=sharing
This is actual modded BIOS.

@Fernando
There is a picture from the section with Disks selection:
https://photos.app.goo.gl/8eY2jkE53xJvmX5k6
Sorry for that Russian language here, I can't change it. But I think everything is clear here:
There is only NVMe disk (other disks are unplugged) and it's split into 3 partitions: System, MSR and Primary. I recreate them and do formatting and then continue.

I think EFI system partition is here, but it is 300Mb sized.
I can see it in Disk management: https://drive.google.com/file/d/1H48moiP...iew?usp=sharing
Can it be a problem because of size? I don't know how to manage it, it was created automatically.

I compared Rufus settings. There is a screenshot: https://drive.google.com/file/d/1mkbUgm3...iew?usp=sharing
It looks the same as your from the Guide.
I'm creating new bootable USB flash drive with the setting above and trying to install again