Grub Config file for Multi-ISO boot USB stick

set timeout=60
set default=0

menuentry "Debian Wheezy 32-bit" {
  loopback loop /Debian/debian-7.4.0-i386-netinst.iso
  linux (loop)/install.386/vmlinuz gfxpayload=text --
  initrd (loop)/install.386/initrd.gz
}

menuentry "Debian Wheezy 64-bit" {
  loopback loop /Debian/debian-7.4.0-amd64-netinst.iso
  linux (loop)/install.amd/vmlinuz gfxpayload=text --
  initrd (loop)/install.amd/initrd.gz
}

menuentry "CentOS 6.5 32-bit" {
  loopback loop /CentOS/CentOS-6.5-i386-netinstall.iso
  linux (loop)/isolinux/vmlinuz gfxpayload=text --
  initrd (loop)/isolinux/initrd.img
}

menuentry "CentOS 6.5 64-bit" {
  loopback loop /CentOS/CentOS-6.5-x86_64-netinstall.iso
  linux (loop)/isolinux/vmlinuz gfxpayload=text --
  initrd (loop)/isolinux/initrd.img
}

menuentry "FreeBSD 10.0-RELEASE 32-bit" {
# Still can't get this to boot
  insmod ufs1
  insmod usb
  insmod bsd
  loopback loop /FreeBSD/FreeBSD-10.0-RELEASE-i386-bootonly.iso
  set root=(loop)
  kfreebsd (loop)/boot/kernel/kernel
  kfreebsd_loadenv (loop)/boot/device.hints
  chainloader (loop)/boot/loader
}

menuentry "FreeBSD 10.0-RELEASE 64-bit" {
# As above
  insmod ufs1
  insmod usb
  insmod bsd
  loopback loop /FreeBSD/FreeBSD-10.0-RELEASE-i386-bootonly.iso
  set root=(loop)
  kfreebsd (loop)/boot/kernel/kernel
  kfreebsd_loadenv (loop)/boot/device.hints
  chainloader (loop)/boot/zfsloader
}

menuentry "OpenBSD 5.4 32-bit" {
  loopback loop /OpenBSD/openbsd-i386.iso
  kopenbsd (loop)/5.4/i386/bsd.rd
}

menuentry "OpenBSD 5.4 64-bit" {
  loopback loop /OpenBSD/openbsd-amd64.iso
  kopenbsd (loop)/5.4/amd64/bsd.rd
}

menuentry "NetBSD 6.1.3 32-bit" {
  loopback loop /NetBSD/NetBSD-6.1.3-i386.iso
  knetbsd (loop)/netbsd
}

menuentry "NetBSD 6.1.3 64-bit" {
  loopback loop /NetBSD/NetBSD-6.1.3-amd64.iso
  knetbsd (loop)/netbsd
}