How to create Ubuntu 10.10 Live USB for MacBook Pro 3.1?

I tried a lot to create bootable Live USB of ubuntu 10.10 for MacBook Pro of mine but all of the attempts of mine were fruitless. I came to here to get help from all you guys and I am hoping all the users will help me out to make the thing working for me.

I have done following steps to make the thing working for us.

You have to use Gparted to format the SD card and set the same partition table to GPT.

Now create 4GB ext2 partition and create EFI directory in root of Linux partition and you have to create boot within EFI.


After that you have copy the content of ISO to root directory of Linux Partition.
You have to mount efi.img which is located Ubuntu 10.10 ISO and copied bootx64.efi to LINUX/EFI/boot/.

You have to copied grub.cfg to LINUX/EFI/boot/

Code:

---

menuentry "Live USB Ubuntu 10.10"{
  search --set -f /ubuntu-10.10-desktop-amd64.iso
  loopback loop /ubuntu-10.10-desktop-amd64.iso
    linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=/ubuntu-10.10-desktop-amd64.iso vga=773 persistent
  initrd (loop)/casper/initrd.gz
}

---

Now copy ubuntu-10.10-desktop-amd64.iso at the root directory of ubuntu-10.10-desktop-amd64.iso

Reboot the system and rEFIt loaded bootx64.efi from LINUX partition on SD card and Grub will be prompted on the screen.


You have to rename the stock 10.10 bootx64.efi to BOOTX64.efi.

Now add below mentioned lines into Grub

Code:

---

# This is the default GRUB2 configuration file, grub.cfg

# Timeout for menu
timeout=20
default=0

---

if it is not working then copy BOOTX64.efi from the source and relocated the same at stock BOOTX64.efi.

now done following changes into grub.cfg.

Code:

---

# Custom menuentry #2 added 4FEB11
menuentry "Live USB Ubuntu 10.10" {
  fakebios
  root=hd0,1
    linux /casper/vmlinuz root=/dev/sda1 video=efifb agp=off
  initrd /casper/initrd.img
}

---