Btw, CSMWrap has VGA issues. I cannot get any GUI before Win7. Windows 1.0, 2.0 only writes text welcome screen and freezes. Win3.1 refuses to boot because of HIMEM.SYS (I added it in CONFIG.SYS but no luck). Also DOS refuses HIGH, only LOW accepts. For winXP, ntldr cannot manage to display.
So, the main problem is VGA. My laptop iGPU does not have legacy OPROM.