Boot livecd ISO from HDD

With grub2, you can easily boot a livecd image from your hard drive.

General guide

   Note

This is general example. It may not work with all livecds.

1. Copy the iso image to root folder for simplicity:

root # cp /home/user/downloads/systemrescuecd.iso /src.iso

2. Reboot and when grub2 loads press 'c' for console. Run the following commands (tab autocompletion is your friend):

loopback loop (hd0,2)/src.iso
linux (loop)/boot/vmlinuz
initrd (loop)/boot/initrd.lz
boot