DOS ain't dead

CSM BIOS for EFI machines (Announce)

posted by kerravon , Ligao, Free World North, 27.05.2025, 20:15

> I saw this on hackernews. PC BIOS for EFI machines. Alleges to boot
> FreeDOS in QEMU and some physical machines. I wonder if this could be
> improved.
>
> https://github.com/FlyGoat/csmwrap

I was hoping that this would boot MSDOS 4.0 under
Virtualbox.

I ticked "enable EFI" and the bootia32.efi took
effect and produced a lot of verbiage, but hung
instead of booting DOS like I was hoping would
happen.

I was hoping that Seabios wouldn't hard poll the
keyboard, so that Virtualbox would stop maxing
out a CPU.

And even if MSDOS did its own hard polling, I
was hoping it would still work for PDOS/386
which has the same issue.

Is there a way of making Virtualbox work?

Complete thread:

• CSM BIOS for EFI machines - Oso2k, 27.05.2025, 18:51
  • CSM BIOS for EFI machines - kerravon, 27.05.2025, 20:15
  • CSM BIOS for EFI machines - RayeR, 28.05.2025, 20:54
    • CSM BIOS for EFI machines - RayeR, 29.05.2025, 15:58
    • CSM BIOS for EFI machines - Zyzzle, 31.05.2025, 00:25
      • CSM BIOS for EFI machines - RayeR, 03.06.2025, 02:10
        • CSM BIOS for EFI machines - Zyzzle, 03.06.2025, 04:53
          • CSM BIOS for EFI machines - kerravon, 03.06.2025, 06:16
          • CSM BIOS for EFI machines - RayeR, 03.06.2025, 12:36
  • CSM BIOS for EFI machines - success! - RayeR, 11.06.2025, 04:32
    • CSM BIOS for EFI machines - success! - RayeR, 01.07.2025, 04:43
      • CSM BIOS for EFI machines - success! - Zyzzle, 07.07.2025, 02:43
        • CSM BIOS for EFI machines - success! - RayeR, 09.07.2025, 17:05
  • CSM BIOS for EFI machines - 0ffer, 24.06.2025, 14:22