USB multiboot: Everything except Clonezilla works

Question

I am trying to add the Clonezilla live iso to my multiboot USB key. Every other distro seems to work, but Clonezilla boots to the prompt

(initramfs)

instead of launching properly.

I have modified the original menuentry in the same way I did the others and even tried the findiso parameter I found while reading old forum posts. It did not help.

The setup consists of grub installed on a 8GB vfat USB key with the config in /boot/grub/grub.cfg and the images in /isos/. This is my config (clonezilla one last, with the original entry appended).

What am I missing?

menuentry "Ubuntu 13.04 64bit" {
    set iso="/iso/ubuntu-13.04-desktop-amd64.iso"
    loopback loop $iso
    linux (loop)/casper/vmlinuz.efi boot=casper iso-scan/filename=$iso noprompt noeject
    initrd (loop)/casper/initrd.lz
}

menuentry "Ubuntu 13.04 32bit" {
    set iso="/iso/ubuntu-13.04-desktop-amd32.iso"
    loopback loop $iso
    linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$iso noprompt noeject
    initrd (loop)/casper/initrd.lz
}

menuentry "Ubuntu 12.04.4 LTS 64bit" {
    set iso="/iso/ubuntu-12.04.4-desktop-amd64.iso"
    loopback loop $iso
    linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$iso noprompt noeject
    initrd (loop)/casper/initrd.lz
}

menuentry "Ubuntu 12.04.4 LTS 32bit" {
    set iso="/iso/ubuntu-12.04.4-desktop-amd64.iso"
    loopback loop $iso
    linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$iso noprompt noeject
    initrd (loop)/casper/initrd.lz
}

menuentry "Mint 16 Cinnamon 32bit" {
    set iso="/iso/linuxmint-16-cinnamon-dvd-32bit.iso"
    loopback loop $iso
    linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$iso noprompt noeject
    initrd (loop)/casper/initrd.lz
}

menuentry "Mint 16 Cinnamon 64bit" {
    set iso="/iso/linuxmint-16-cinnamon-dvd-64bit.iso"
    loopback loop $iso
    linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$iso noprompt noeject
    initrd (loop)/casper/initrd.lz
}

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

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

menuentry "memtest86+" {
    linux16 /iso/mt86plus
}

# My entry:
menuentry "Clonezilla 32bit to RAM" {
    set iso="/iso/clonezilla-live-20140114-saucy-i386.iso"
    loopback loop $iso
    linux (loop)/live/vmlinuz boot=live username=user hostname=saucy config quiet union=overlayfs noswap edd=on nomodeset noeject locales= keyboard-layouts= ocs_live_run="ocs-live-general" ocs_live_extra_param="" ocs_live_batch=no video=uvesafb:mode_option=800x600-16 toram=filesystem.squashfs ip=  splash i915.blacklist=yes radeonhd.blacklist=yes nouveau.blacklist=yes vmwgfx.enable_fbdev=no findiso=$iso
    initrd (loop)/live/initrd.img
}

# Clonezilla live original:
menuentry "Clonezilla live (To RAM, boot media can be removed later)"{
  search --set -f /live/vmlinuz
  linux /live/vmlinuz boot=live username=user hostname=saucy config quiet union=overlayfs noswap edd=on nomodeset noeject locales= keyboard-layouts= ocs_live_run="ocs-live-general" ocs_live_extra_param="" ocs_live_batch=no video=uvesafb:mode_option=800x600-16 toram=filesystem.squashfs ip=  splash i915.blacklist=yes radeonhd.blacklist=yes nouveau.blacklist=yes vmwgfx.enable_fbdev=no
  initrd /live/initrd.img
}

Pasted in its entirety in case someone wants to use it. Original file names as of 140221.

Answer 1

Even though it's been quite a while since this question was asked, I'll still give an answer.

After testing my own menuenty for the latest Ubuntu based version of the clonezilla iso, I compared it with yours. Turns out they were identical. But I did get it to work. Do note though that from my tests it took about 1-2 minutes before anything appeared on the screen while booting.

For the Debian based version, the following menu entry worked for me with the latest Clonezilla iso:

menuentry "Clonezilla live (To RAM, boot media can be removed later)"{
    set isofile="/iso/clonezilla-live-2.2.2-32-i486.iso"
    loopback loop $isofile
    linux (loop)/live/vmlinuz boot=live username=user config quiet noswap edd=on nomodeset noeject locales= keyboard-layouts= ocs_live_run="ocs-live-general" ocs_live_extra_param="" ocs_live_batch=no vga=788 toram=filesystem.squashfs ip=  nosplash i915.blacklist=yes radeonhd.blacklist=yes nouveau.blacklist=yes vmwgfx.enable_fbdev=no findiso=$isofile
    initrd (loop)/live/initrd.img
}