Anyone using syslinux to chainload partition with TinyCore-7.2.iso dd'ed to it?

I'm REALLY liking TinyCore 7.2 and have a project in mind for it.
What I'm trying to do is partition an 8GB usb thumbdrive with 4 partitions.
As reported by # fdisk -l /dev/sdx , the C/H/S is 7890/64/32. I have confirmed the location of the partitions ...