I have almost tried everything these days trying to boot Windows 10 using T440p with coreboot, but still haven't succeed.
I had created my Windows 10 installer usb by writing the en_windows_10_business_editions_version_1909_updated_jan_2020_x64_dvd_e9cb5542.iso to usb drive through Rufus, and checked this usb works on a T420 with coreboot. But this usb does not work on T440p. I have tried SeaBIOS, Tianocore, and with/without VGA BIOS but still not work. When using SeaBIOS without VGA BIOS, I can see a loading bar at the bottom but then hanging there. When using SeaBIOS with VGA BIOS, the backlight is on but the screen shows nothing. I tried extract data.vbt from vendor BIOS and replaced the one from source with it, still not work. I did see one post on reddit mentioned that he had been able to boot Windows 10. https://www.reddit.com/r/coreboot/comments/enor0h/t440p_tianocore_and_windows_10/ I was wondering is my hardware different from others' T440p? Then I tried cherry-pick this patch (git fetch https://review.coreboot.org/coreboot refs/changes/90/30890/10 && git cherry-pick FETCH_HEAD) and using autoport to generate source of my T440p. Then I compared it with masters' source, but there is not much difference. I tried changed CPU and RAM but still not work. Since I make a fresh install of Windows on the T440p, I tried install it on T420 and then change the hard disk to T440p. It still does not work. When I use Tianocore, the circle stopped spin and hangs at "Preparing Automatic Repair": https://imgur.com/nY9wAQR Sometimes it hangs shows a BSOD of "MACHINE CHECK EXCEPTION" But there is no further information https://imgur.com/HKio1QY (I tried to find if there are mce error logs under linux using rasdaemon but I get nothing https://wiki.archlinux.org/index.php/Machine-check_exception) I also checked C:\Windows\minidump to see if there are BSOD dumps but there is none. I almost out of idea, I will attach all my files, original BIOS (a modded one with ME cleaned, advanced menu unlocked, and whitelist unlocked), auto port generated logs and sources, and the mrc.bin, data.vbt, defconfig, and also my build coreboot.rom. https://mega.nz/#!TNlCFKjA!rXDhP5K4S8FZpSif8Ntj-NUGKML4kFYtwAG_70XTpsU Could anyone help me with this? Could anyone successfully using T440p to boot Windows share the steps you did it and your config or your coreboot.rom (last 4MB)?
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