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How can I make the Ubuntu download bootable from a USB stick without downloading third party software?

Thanks!

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    what is the host OS from where you want to create the bootable USB?
    – astrob0t
    Nov 10, 2014 at 1:26

2 Answers 2

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Assuming you're on Linux,

  • Open a terminal and type sudo su
  • lsblk to note which device is your USB.
  • mkdir /mnt/myusb && mount /dev/sdb1 /mnt/myusb (replace b1 with your actual usb device id, /dev/sdb1 in my case)
  • grub-install --force --no-floppy --boot-directory=/mnt/myusb/boot /dev/sdb (replacing b if necessary)
  • cd /mnt/myusb/boot/grub
  • wget pendrivelinux.com/downloads/multibootlinux/grub.cfg
  • Copy the iso to the root of your pen drive and modify the grub.cfg file in order to load the isos from the correct location.

    set timeout=10
    set default=0
    menuentry "Run Ubuntu Live ISO" {
    loopback loop /ubuntu-xx-xx-i386.iso linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=/ubuntu-xx-xx-i386.iso splash --
    initrd (loop)/casper/initrd.lz
    }
    

(replace "/ubuntu-xx-xx-i386.iso" with the correct file name)

  • Open any disk utility software and make sure that the partition has got the "boot" flag. If not, set it.

DONE!

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Open a terminal window and enter this command

sudo apt-get install unetbootin

to install Unetbootin from the Ubuntu repositories.

Once added to your system, plug in the flashdrive, launch unetbootin, select the version of *buntu you have already downloaded, and unetbootin will create a bootable LiveUSB drive.

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