LinuxQuestions.org - No boot of PuppyLinux on USB pendrive

Hi everyone.
I have a 128 MB USB pendrive partitioned like this: one 64 MB FAT32 partition with my all data, university exercises, music and so on, and another 64 MB FAT16 "bootable" partition with PuppyLinux.
The partitions are "/dev/sda1" and "/dev/sda2" then.
Here the commands I tried to install PuppyLinux:

Code:

# mount -o loop cd-puppy.iso /mnt/foo

# mount /dev/sda2 /mnt/pendrive

# cp /mnt/foo/* /mnt/pendrive

# cd /mnt/pendrive

# du -ah

2.0K    ./boot.cat

49M    ./image.gz

10K    ./isolinux.bin

2.0K    ./isolinux.cfg

872K    ./vmlinuz

2.0K    ./syslinux.cfg

8.0K    ./ldlinux.sys

49M    .

# cp isolinux.cfg syslinux.cfg

# cd ..

# umount pendrive/

# syslinux /dev/sda2

Well, everything seemed to work fine, but when I tried to boot with the USB pendrive (I have an Asus P4C800 with USB boot support, and I put USB before anything else in the boot sequence), my USB pendrive had been totally ignored and my Debian booted as always.
So I thought the bootloader (SysLinux) may not work if installed on the second primary partition (/dev/sda2), so I tried with:

Code:

# syslinux /dev/sda

/dev/sda: filesystem type "  FAT16" not supported

And now I don't really know what can I do... expecially because the file "syslinux.cfg" is needed by SysLinux to get installed.
This file contains this:

Code:

# cat syslinux.cfg

default vmlinuz root=/dev/ram0 initrd=image.gz

append ramdisk_size=61440 initrd_archive=ext2 PFILE=pup080-none-262144

What I need is to have "/dev/sda1" with my all data, and "/dev/sda2" with PuppyLinux, but "/dev/sda" must be bootable by the BIOS!!!
What can I do to have my USB Linux distro working?
Thanks to all you guys!
Bye