Rhodez wrote:
Since the disk is a NVMe it must mean that is boots with UEFI?
What does one have to do with the other? NVMe is merely a storage technology. And all storage devices (with the possible exception of SD cards) don't care one jot or tittle about what is stored on them. No, MBR partition tables have the problem that they are limited to - I don't remember exactly, was it 2TB or 4TB? And in theory a legacy BIOS implementation of NVMe could exist. So no, NVMe does not automatically mean UEFI. Or at least I don't know that it would.
However, MBR can work with UEFI, of course. Needs a system partition, which is signalled with partition type 0xEF (or was it 0xEE? Have to look this up later).
Rhodez wrote:
But if I understand correct the MBR should then just contain a partition with an EFI system partition? right?
Not really. If the disk is really using an MBR partition table, then it should contain all partitions that are defined. But the system partition should be one of them. Actually, it should be the first one, but I'd need to read the UEFI spec for details.
Rhodez wrote:
My disk has three partitions. The main C:, a recovery, and then partition 0 which very much fits in size to an EFI partition. However diskmgr.msc just says it is NTFS?
Well, if it is NTFS then either you have a nonstandard UEFI implementation or that isn't the partition you are looking for. Considering the contents are also not what you expect, i suspect the latter. That is also supported by this:
Rhodez wrote:
The partition has a \boot directory where there is directories with a lots of languages - da-DK, en-GB ect. Inside the directory there is a bootmgr.exe.mui.
This seems to be some Windows boot partition, not a UEFI system partiton. Maybe part of the recovery system.
Does the system have a BGRT? That is a specific ACPI table, that contains an image that operating systems can display while the system is loading. If it is present you get a logo of the mainboard manufacturer displayed on screen while Windows is loading. And to my knowledge that table is specific to UEFI systems. Well, I suggest you boot a Linux Live system on it and have a look with it.