Dual boot puppy linux hdd / batocera usb

ienapop

Hello,
I'm actually using puppy linux (macpup) installed on internal hdd and batocera on usb.
Each time I want to change OS, I have to go through Bios.
Is there a way, using grab4dos (or something else) from Puppy Linux, to do a dual boot where I can choose Batocera as default system?
Thanks

nadenislamarre

yes, probably.
from grub, yes.
i don't know grab4dos.

ienapop

Thanks for your answer.
Unfortunately I'm not able to edit Grub properly and now Batocera doesn't boot anymore...
I'll try again