Windowspe vgaoem.fon edit

[LiwisJames]

I discovered the font vgaoem.fon that is responsible for the font configuration of the windows terminal, I would like to change it I managed to modify the characters however, it comes with an OEM/DOS script that is always active and never allows these special characters to be used I'm using fontforge is there any way to make this font change this script to change a font FON (default windows fonts win 3.1) OR boot load, I'm trying to make it native and customized system wide. any ideas to modify? or how to do with fontforge ?

[grindmore]

FontForge doesn’t fully support editing or repacking.FON files with custom code pages, so that might be the limitation you’re hitting. You might want to look into tools like Fony or some of the older font editors that specifically handle bitmap fonts with OEM encoding. Also, modifying how the font is loaded system-wide might require editing the registry or system boot files, depending on how early you want the font to load.

[BAO_VE_TOA_NHA]

Interesting project! vgaoem.fon is a legacy raster font, and yes — it's tightly bound to OEM code pages (like CP437), which makes modifying it system-wide tricky. FontForge can edit .fon files, but applying them at the system level — especially in Windows PE or boot environments — often requires rebuilding the font resource and injecting it into the appropriate system files (like winpe.wim or boot images).

You might want to:

Use Resource Hacker to inspect or replace embedded fonts in system files.

Ensure the modified .fon keeps the exact internal name (to match OEM expectations).

Edit the registry or WinPE settings to point to the custom font (though this is limited in PE).

Also, check if your system reverts the changes due to signature checks or recovery protection (like Secure Boot).
If you're aiming for native, system-wide customization, it may require deeper patching of system DLLs or fonts inside the WinSxS store.

Would love to hear how far you’ve gotten with FontForge — did the modified characters show up correctly when loaded manually?