@Fernando:
I understand what you're talking about, but I don’t have this entry. The motherboard at boot says that no bootable discs were found. In BIOS, in the boot section, it is not displayed in any way, neither as a device, nor as a "boot manager".

From Windows (if boot from another system and disk) this disk is seen normally, the Windows 10 installer also sees it normally.
But the UEFI does not determine its as boot, from the UEFI it is not visible at all.

I suspect that there are incompatibilities, since everything was fine with the previous (other model) M2 NVMe SSD on this motherboard, Win 10 was booting from it.

Perhaps could be useful to upload here images of the whole bios setup... (?)

Have u tryed enabling secure boot? Once upon a time i've realized how to enable or disable several boot options by doing it, was an HP mobo, i've went almost crazy with that machine 'till i've enabled an administrator password for enter the setup. It seems i'm talking about different things, but in that case were strong linked circumstances. Incredible but true.

@Fernando:
I meant that the Windows installer correctly sees the disk, creates partitions and copies files - all actions until the first reboot.
The first boot (which should happen with the Windows just deployed on the disk) of the system does not occur, the motherboard reports that no boot devices were found.

When I connect another disk with Windows 10 and boot from it, I see that all partitions on M2.SSD are created, Windows files are written.

The previous M.2 SSD was hynix bc501 hfm256gdjtng-8310a, this is also a NVMe disc.

Yes, @Fernando , i know, is just that i was thinking about any chance for the mobo to "see" the drive, not as a final resolution to the issue.

Now that's it, I solved the problem.
Since the UEFI of the motherboard is the version from 2015, I decided to try to "update" it - inject the NvmExpressDxe_4.ffs file according to the method from the first message of the topic.

It helped, everything worked right away, TOSHIBA SSD immediately began to be seen as boot.
I don’t know why my previous NVMe SSD didn’t need this, but it doesn’t matter anymore. I hope my case helps someone.

Thank you all for your advice!
Fernando, thank you very much for the UEFI modification guide! Great! )))

Zitat von Fernando im Beitrag #5514

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@Oren:
Which BIOS version did you customize by inserting the NvmExpressDxe_4.ffs module?

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Hi everyone, new to the board. Say I've been following along this thread trying to get my Asus P8Z77-V Deluxe to boot from NVME. I am to the point the BIOS can "see" the NVME as a bootable device. My original Windows 10 install was cloned to the NVME but won't boot. I get the message "Reboot and select proper boot device." I've tried the various BIOS setting changes discussed in the opening post but still no luck.

I think the mistake I made was to configure the NVME as MBR. I think it has to be GPT to be bootable. Can someone please verify?

Thanks! Chris

OK thanks - I'll try fixing that next.

Chris

EaseUS Partition Master has an option to convert from MBR to GPT. You could always try that before anything more drastic.