First I got a copy of UUPdump 26H1 (built 2000-something). I just built the ISO normally to see if it had any NVIDIA drivers in it.
It didn’t. It comes up and says “Insert disk for hardware support”. USB didn’t work either, so no keyboard or mouse, nor would a USB stick help. With a wired backlit keyboard, I can see when WinPE starts loading, USB just shuts off.
So then I looked around for RTX Spark driver downloads. I checked for the ASUS ProArt 16 unit. It has a MyASUS WinPE recovery mode image. So I grabbed the boot.wim off it and just replaced the one on my ISO with that one, figuring the drivers for RTX Spark are all included. They were, but it gave me the aforementioned DRIVER_VALIDATION error.
So I extracted those drivers, and put them into the UUPdump drivers folder, changed the script to get it to add the drivers (otherwise it ignores them), and rebuilt the image. Same error as the WinPE image.
I tried reducing the number of drivers, but any time I included any of them, including the PEP driver, and the motherboard core driver, or even the XHCI driver, it gave me the same error.
So I went back online and found the HP Omnibook Ultra model, downloaded their driver packs, and bundled them into the UUPdump script. Same error.
So then I tried just rebuilding a generic image and using DISM, mounted the boot.wim and played around with the drivers manually. Same error. The command is dism /image /mountdir: /add-driver /driver: /recurse (when using subfolder)… then commit and dismount.
I tried a 26H2 image just to compare, and it’s the same result: both the ASUS and HP drivers cause a DRIVER_VIOLATION error when any are injected, and without any drivers NVMe isn’t detected, and USB shuts off part way thru the WinPE loadup and it wants a driver disk that I can’t put in or access.
It’s possible that the USB ports getting shut off with the generic install is the reason why NVMe isn’t detected - it could be that the computer isn’t able to read the other drivers on the disk.
The current UUPdump that I’m trying is the 28000.3231.arm64.en-GB (English International because I’m in Canada and that’s the base language pack for Canada - the other is US English). I’m gonna give it another go after I finish this message.
You’ve gotten further than me though. I can’t even get Windows Setup to boot. I don’t have any 25H2 ARM64 images either. Did you not try the ARM64 Windows beta GPU driver in the forums? The models of computers I mentioned should have RTM drivers on their support pages too.
I have a feeling that because this is a special hardware release, Microsoft isn’t going to release ISO images for them. So far from what I’ve read, the OEMs are all using some kind of Internet recovery support in firmware (Dell and HP already offer that on other machines), or else in the recovery partition on the drive (like with Asus where it’s just a WinPE image that downloads the install image through their backend server).
Will update with details of the most recent install attempt.