Fulgurance wrote: |
Is it possible to start in BIOS with good screen resolution ?
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Not sure if I understand your question, but you don’t have control over what video mode BIOS sets up before your bootloader is started, the same applies to BIOS emulation in UEFI (since it’s emulation, remember?).
So, if you choose to write a BIOS bootloader, you have a text-mode (03h, AFAIR). After that you can either deal with good old modes, you can try VESA modes (if supported by emulaion layer) or you can load your OS, which in turn loads video drivers and then uses any resolution your video adapter supports.