On 17/02/2026 21:52, tito wrote:
> Did you read it at all:

Yes, all of it.

> "I recall having some similar problems with a nvme disk and debian/devuan install
> some time ago, install apparently succeeded but system was unbootable and
> it was solved by switching from legacy bios to uefi bios mode."
>
> Then chatgpt gives a few hints on why this happens:
>
> "Legacy BIOS often lacks native support for NVMe drives, meaning the drive may be visible
> within the installer but fail to boot after installation. "
>
> Then steps to fix the issue:
>
> "Set the BIOS mode to "Pure" UEFI (disable CSM/Legacy mode).

The unquoted parts are stuff that would have been useful if
it had actually been included in your original posting.

> Parts unchecked by me:
>
> "Ensure the USB installation media is created in GPT mode
> Boot the USB installer in UEFI mode."
>
> Possible hallucinations:
>
> "use a third-party bootloader like Clover"
>
> never heard about it and don't want to check
> if it really exists and what it does.

Again, that would have been useful if it had actually been included
in your original posting.

    Julf