How to use GRUB2 to boot "system rescue CD.iso" file or "UbuntuLiveCD.iso" file, this file is saved on unmounted partation at hard drive ?

basm alah alrahman alrahim

I just asked the same question at ask.ubuntu and I get the following answer :

I started to make a partition by using the following command:

$ sudo fdisk /dev/sdb

I used fdisk command parameters (or sub commands ) to make a partition /dev/sdb6 [ extended partition ]

Then I made a mount point by using the following commands:

$ sudo mkdir /mnt/Rescue

$ sudo mount /dev/sdb6 /mnt/Rescue

$ sudo chmod +rwx /mnt/Rescue

I then made a menu entry at /etc/grub.d/40_custom file with the following entries

menuentry "Ubuntu-12.04-ISO" {

set isofile="/ubuntu-12.04-desktop-i368.iso"

loopback loop (hd1,6)$isofilelinux

(loop)/casper/vmlinuz.efi boot=casper iso-scan/filename=$isofile noprompt noejectinitrd

(loop)/casper/initrd.lz }

Note: I am using2 hard disks1st one with /dev/sda and the2nd with /dev/sdb