entry for boot partition in protective MBR of GPT disklabel?

[Brian Ristuccia]

Is there any way to cause parted to make an entry in the protective MBR
for a partition which exists entirely below 0xFFFFFFFF? I'd like to use
this feature to make the boot partition at the beginning of my large
block device accessible to a bootloader which only understands MSDOS
style partition tables.

-- 
Brian Ristuccia