[syslinux] Sysinux 6 will not boot ISOs on BIOS (i.e. pre-UEFI) systems

[Thomas Schmitt]

Hi,

hpa wrote:
> -               mov dx,cx
> +               movzx edx,cx
Gerardo Exequiel Pozzi:
> Yes! Fixed :)
> (maybe garbage in high word of "edx"?)

I am now pondering too, why my machine booted from high LBAs.

I understand that the new code zeros the upper 16 bit of EDX.
Was there remaining garbage from early BIOS activity before
isolinux.bin got started ?
Does my BIOS perhaps clean registers before handing over
control ?


Have a nice day :)

Thomas