QUOTE (chung1721 @ Apr 27 2010, 10:23 PM)

Thanks for your reply and waiting...
The experimental
memdisk.c32 Syslinux COMBOOT32 module worked for me on a couple of tests. You could download it and give it a try, but don't use it to override whatever your boot device is. For example, it's safe to memdisk.c32 a floppy disk image if you're booted from Syslinux on an HDD partition and vice versa. But if your Syslinux is booted from BIOS drive 0x80 (an HDD), don't do
CODE
boot: memdisk.c32 foo.hdd harddisk