[syslinux] memdisk 3.35 + ghost problem

[d tbsky]

HI:
   i just trying memdisk that comes with syslinux 3.35. i try to load
a dos image,
which contains ghost verison 8.3 and ghost version 11.
both version of ghost  hangs when start-up.
memdisk that comes with 3.40 pre is ok. and many earlier versions is ok too.
 i try some parameter like "safeint","raw". but none work.
 i use memdisk with pxelinux, below is part of my pxelinux.cfg:

MENU LABEL ^1) Dos Command Line
KERNEL memdisk
APPEND initrd=os-image/dos.img c=40 h=40 s=40 floppy keeppxe


thanks for your help!!

Regards,
tbskyd