various grub2 menuentries to boot from iso

menuentry "Start Kubuntu 1510" {
        set isofile="/kubuntu-15.10-desktop-i386.iso"
    set gfxpayload=keep
        loopback loop (hd0,msdos1)$isofile
### linux   (loop)/casper/vmlinuz.efi  file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity quiet splash ---
    linux   (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile noprompt noeject
    initrd  (loop)/casper/initrd.lz
}

menuentry "Start Ubuntu 1510" {
        set isofile="/Ubuntu-15.10-desktop-i386.iso"
    set gfxpayload=keep
        loopback loop (hd0,msdos1)$isofile
### linux   (loop)/casper/vmlinuz.efi  file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity quiet splash ---
    linux   (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile noprompt noeject
    initrd  (loop)/casper/initrd.lz
}
menuentry "Windows" {
set root=(hd0,1)
chainloader +1
}

menuentry "Mini.iso" {
linux /casper/linux priority=low vga=788 --
initrd /casper/initrd.gz
}

menuentry "USBUbuntu" {
set root=(hd1,msdos1)
linux /vmlinuz root=/dev/sdb1
initrd /initrd.img
}

menuentry "monabuntu" {
set isofile="/casper/monix.iso"
loopback loop (hd0,2)$isofile
linux (loop)/casper-vmlinuz boot=casper persistent iso-scan/filename=$isofile noprompt noeject
initrd (loop)/casper-initrd.img
}

menuentry "ubuntu-14.04-desktop-i386.iso" {
         set isofile="/casper/ubuntu-14.04-desktop-i386.iso"
         # or set isofile="/<username>/Downloads/ubuntu-12.04-desktop-i386.iso"
         # if you use a single partition for your $HOME
         loopback loop (hd0,2)$isofile
         linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile noprompt noeject
         initrd (loop)/casper/initrd.lz
 }



mkisofs -r -J -l -o output