# This Menu entry brought to you courtesy of https://www.pendrivelinux.com/install-grub2-on-usb-from-ubuntu-linux/ set timeout=10 set default=0 menuentry "Run Ubuntu Live ISO" { loopback loop /ubuntu.iso linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=/ubuntu.iso splash -- initrd (loop)/casper/initrd }