I've been working on a multiboot flash drive for a little while. It's a project I come back to every now and then. I found some pretty good references that I've placed below.

I had to dig through some of the syslinux boot scripts to find the correct boot info.

Tails worked when I found this link.Tails booting via Grub2, but the Debian-Live CD wouldn't work using the same options.

I should have it sorted out when I get a few min. I'll also post the config when I get it finished.

References

• http://www.panticz.de/MultiBootUSB
• http://tails.boum.org/todo/usb_install_and_upgrade/#index4h3