Hi, I've built SeaBIOS 1.12.1 with coreboot for the Thinkpad X210 (51nb aftermarket board). Generally I can get into SeaBIOS itself just fine, but I haven't had any luck loading much of anything besides Linux Live. Tianocore & other payloads work just fine as far as I can tell.
I've prepared various Windows install USBs (using Media Creation Tool, Rufus, Windows 7 Creator etc) making sure that they actually boot on non-coreboot machines. I tested them with an old Core2Duo as well as the current machine in question set to Legacy mode, and they load fine.
I've read SeaBIOS is supposed to be fairly compatible these days, so I'm surprised I can't load these things.
How could I debug this / is there anything I should be checking for? SeaBIOS / coreboot is built with vgabios.bin extracted from my board, not gfxinit. Although using gfxinit doesn't make any difference though, it behaves the same...
Thanks, Rafael