Clonezilla iso won't boot from grub2 menu

I just closed my previous thread which was about getting Clonezilla to show up on the grub2 menu. Refer to https://www.linuxquestions.org/quest...nu-4175700341/

Now that I have the menu entry for Clonezilla, when I select it at startup it won't boot. It just blinks and goes back to the grub2 menu.

Do I have to make a bios change to boot an iso file? I've had this working on this laptop in the past, and I don't remember having to jump through these hoops.

Any help will be greatly appreciated!