[syslinux] Chainloading in EFI

H. Peter Anvin hpa at zytor.com
Thu Aug 8 07:54:15 PDT 2013

On 08/08/2013 07:32 AM, githlar at gmail.com wrote:
> A couple things that I'm curious about:
> 1. Is it even technically possible to bootstrap a BIOS MBR from EFI?

It is generally NOT.  I say "generally", because there might be some
systems on which it is possible by invoking the Compatiblity Support
Module (CSM), but that would be a system-by-system kind of thing as I
don't know of any standard protocol for doing so.

> 2. An MBR is inherently 16 or 32-bit, correct? So, is the fact that I'm
> booting a legacy (non-64-bit) MBR with the efi64 Syslinux an issue?

Yes, as in "it will not work."



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