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I know how to create a bootable USB (pendrive), or CD, to install Ubuntu on to a hard disk. But I already had an installed system on USB, and don't have any additional USB anymore. So I booted into the system on USB already, how can I install a new Ubuntu system (or copy of my USB system) into the target hard disk?

Greenonline
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naive231
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    Possible duplicate of [Install Ubuntu from ISO image directly from hard disk of a system running Linux?](http://askubuntu.com/questions/340156/install-ubuntu-from-iso-image-directly-from-hard-disk-of-a-system-running-linux) – Byte Commander Mar 29 '16 at 08:35

1 Answers1

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There is a method of installing anew from an ISO file without burning it to a disc:

  1. Download an installer ISO. If you'll have a good Internet connection while installing, mini.iso is an excellent option, giving a very small ISO file that can install any Ubuntu flavor.
  2. Open a terminal by pressing Ctrl+Alt+T.

  3. Install grml-rescueboot:

    sudo apt install grml-rescueboot

  4. Move the installer ISO you downloaded to /boot/grml (replace filename.iso with the actual ISO filename):

    sudo mv ~/Downloads/filename.iso /boot/grml/

  5. Update GRUB:

    sudo update-grub

  6. Reboot and select the ISO.

  7. Install the desired flavor of Ubuntu, making sure to install it on the hard drive and not the USB drive.
Olathe
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