> Date: Wed, 28 May 2025 10:06:41 +0100 > From: Liam Proven <lpro...@gmail.com> > Subject: [Freedos-devel] CSMWrap > > CSMWrap is a cool little hack that brings back the good old PC BIOS on > those fancy-pants UEFI-only systems. It utilises the CSM > (Compatibility Support Module) and VESA VBIOS from SeaBIOS project to > emulate a legacy BIOS environment. > > https://github.com/FlyGoat/csmwrap
I read the comments in the hacker news thread. https://news.ycombinator.com/item?id=44101828 Two "gotchas" were mentioned: 1) Modern GPUs may not act enough like an IBM VGA for a generic VGA VBIOS to work. 2) CSMWrap must be installed in a GPT partition. In theory a hybrid GPT/MBR setup is possible, it will not reliably boot. > We've found several UEFI implementations will not consider a disk > bootable if the pMBR doesn't exactly match the spec, which > specifies that the 'protective' partition shouldn't be marked as > bootable in the MBR partition table. > > Meanwhile, other implementations will not consider the disk > bootable in BIOS mode if the partition in the pMBR is not marked > bootable. _______________________________________________ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
