[syslinux] Using syslinux on the PMBR of a GPT partition table

[Stewart Adam]

Hi,

I've been working on making a USB key which is bootable via EFI and 
BIOS, and so far I've succeeded but only by using GRUB on the MBR. 
Syslinux installs correctly, but because the USB key can only have one 
partition and its type is EFI protective, it isn't set to bootable on 
the MBR partition table and so syslinux (mbr.bin) doesn't boot. I've 
also tried gptmbr.bin which semi-works -- I don't get "missing operating 
system" as I do with mbr.bin, but the OS doesn't actually load either. 
My BIOS just reads the USB key a bit and then gets stuck.

I was wondering what was the status of syslinux and GPT, and was 
wondering what testing I could do to help improve hybrid GPT+MBR support.

Stewart