@magorium: the experiment looks promising. The strange thing which I see is this:
Yeah, i know :-)
I got to work with what the grub tools offers me (well, not really but since i am new to grub and its particularities with regards to hybrids i have to see/understand what grub puts to xorriso)
I got some very strange (sometimes even unrepeatable) results, and of course the perfect solution would be that gpt and efi support is added as well (according to kiwi devs that is possible to do with grub but nobody seems to do that and use other solutions instead, so the interwebs is pretty quiet for me atm).
In the meanwhile, just as a PoC, I've written a small Python script
That also looks promising.
... because it's not possible to find the VendorID & DeviceID couple on the PCI devices database which I've used
I think that is something you would have to learn to live with ?
For example, the nvidia ones are not even listed on the nvidia's driver website (
https://www.nv-drivers.eu/driver-by-vendev.html) or perhaps no specific drivers are needed for the device
There even might be the possibility of fake or miss-reported hardware or hardware that is/was experimental or not intended for mainstream availability (developer specific hardware for example). There are quite a bunch of fake video-cards around for example.
The only person that has the relevant information is the user who has such hardware and is able to identify it correctly (and contribute that knowledge to a pci database)
I did have a quick look around though, but was also unable to find any further hints on these unknown list of devices except for a pci database about nvidia here (
https://envytools.readthedocs.io/en/latest/hw/pciid.html) which for example suggest that device 0775 (MCP77) is a memory controller (
https://envytools.readthedocs.io/en/latest/hw/pciid.html#pci-ids-mcp77 )
