Come avviare da iso con il boot loader Grub2/Burg

Ho un caricatore a catena perfetto con SysLinux, Grub4Dos e Grub2, ed ecco le mie configurazioni:

Syslinux

LABEL DSL
KERNEL memdisk
INITRD /iso/dsl.iso
APPEND iso raw

LABEL GRUB4DOS
KERNEL /boot/grub.exe

Grub4Dos

title Paragon Partition Manager
map (hd0,0)/iso/paragon-bootable-media.iso (hd32)
map --hook
chainloader (hd32)
boot

title Syslinux
chainloader /boot/syslinux/syslinux.bin

title GRUB2 Chainload
root (hd0,0)
kernel /boot/grub/core.img
boot

Grub2

menuentry "Ubuntu 13.10 Desktop ISO" {
  loopback loop /iso/ubuntu-desktop-amd64-13.10.iso
  linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=/iso/ubuntu-desktop-amd64-13.10.iso noeject noprompt splash --
  initrd (loop)/casper/initrd.lz
}

menuentry "Tinycore ISO" {
  loopback loop /iso/tinycore.iso
  linux (loop)/boot/bzImage --
  initrd (loop)/boot/tinycore.gz
}

menuentry "GRUB4DOS" {
  linux16 /boot/grub.exe
}

menuentry "SYSLINUX" {
  chainloader=/boot/syslinux/syslinux.bin
}