Clonezilla LIVE Boot Using ISO - CentOS 7
Step 1:
Download Ubuntu From "http://clonezilla.org/downloads.php"
    http://iij.dl.osdn.jp/clonezilla/67927/clonezilla-live-20170626-zesty-amd64.iso
Download: ubuntu 16.4 
    mkdir /live
    cd /live
    wget http://iij.dl.osdn.jp/clonezilla/67927/clonezilla-live-20170626-zesty-amd64.iso
    mv clonezilla-live-20170626-zesty-amd64.iso /boot/clonezilla.iso
Step 2:
Add Menuentry on grub.cfg
Loopback Explantion : 
The loopback line must reflect the actual location of the ISO file. In the example, the ISO file is stored in the / directory
X is the drive number, starting with 0; 
Y is the partition number, starting with 1
menuentry 'clonezilla' {set isofile="/live/clonezilla.iso"
loopback loop (hd0,2)$isofile
linux (loop)/live/vmlinuz boot=live config nolocales edd=on nomodeset noprompt ocs_live_extra_param="" keyboard-layouts="NONE" ocs_live_batch="no" locales="en_US.UTF-8" net.ifnames=0 vga=788 ip=frommedia toram=filesystem.squashfs union=overlay nosplash findiso="$isofile"
initrd (loop)/live/initrd.img
}
sda5 would be designated as (hd0,5); disk 1 partition no 5 
sdb1 would be (hd1,1); disk 2 partition no 1 
Other Location Examples:
(hd0,5) /boot/$isofile , Located in the system's normal /boot partition on sda5
(hd0,6)/$isofile : Located in a separate boot partition on sda6
(hd0,7)/username/Downloads/$isofile  : Located in a separate home partition on sda7
(hd1,2)/iso/$isofile :  Located in the /iso folder of the sdb2 / partition
df -f
Here is ISO file path is /live on /sda2 , disk 1 & partatin no 2 
vi /boot/grub2/grub.cfg
### BEGIN /etc/grub.d/10_linux ###
………..
………..
………..
………..
### Grub Entry for boot ISO
menuentry 'clonezilla' {
    set isofile="/live/clonezilla.iso"
    loopback loop (hd0,2)$isofile
    linux (loop)/live/vmlinuz boot=live config nolocales edd=on nomodeset noprompt ocs_live_extra_param="" keyboard-layouts="NONE" ocs_live_batch="no" locales="en_US.UTF-8" net.ifnames=0 vga=788 ip=frommedia toram=filesystem.squashfs union=overlay nosplash findiso="$isofile"
    initrd (loop)/live/initrd.img
}
### END /etc/grub.d/10_linux ###
Step 3:
Run command and install 
grub-reboot clonezilla
reboot
Enjoy & Now your Live Clonezilla ISO will Boot  

