Can't configure syslinux to show a menu for multiple options

[Pocc]

Hi all,

I have Ubuntu 12.04.02 LTS on an ADATA S102 16GB USB 3.0. I noticed that it boots much faster when persistence isn't enabled. I wanted to be able to use two different options, one with and without the persistence partition.

Partitions:
2GB for OS
13.4 GB casper-rw

This is my syslinux.cfg currently:

*****

default menu.c32
prompt 0
menu title My Distro Installer

timeout 600
f1 help.txt
f2 version.txt

# D-I config version 2.0
include menu.cfg
default vesamenu.c32
prompt 0
timeout 50
ui gfxboot bootlogo

default persistent
say Booting a persistent Ubuntu session...
kernel /casper/vmlinuz
append file=/cdrom/preseed/ubuntu.seed boot=casper persistent initrd=/casper/initrd.lz quiet splash noprompt --

*****

I tried to make a menu with the first 2 paragraphs. The 3rd and 4th boot non-persistence and persistence respectively. When I try to boot with the current syslinux.cfg, it says that there is a missing operating system.

I'm looking for both suggestions and pointers to how to read syslinux.cfg files. Thanks!

[Pocc]

Advice for further research?