Creating Symlink To a File

At terminal :

ln -s source_file symbolic_link

https://linuxize.com/post/how-to-create-symbolic-links-in-linux-using-the-ln-command/#creating-symlink-to-a-file

How to mount hard disk for backbox ubuntu to extend space on virtual machine(error No Space Left)

You can use GParted and benefit from the GUI they offer.
or you can follow the next steps using the CLI:
http://manpages.ubuntu.com/manpages/bionic/en/man8/mount.8.html

Download Ubuntu 11.10 (Oneiric Ocelot) CD ISO / DVD Images

Ubuntu Linux (a GNU/Linux-based computer operating system) version 11.10 has been released and available for download. The new release includes some enhancements to make your experience even more enjoyable. The Default user interface is set to unity shell on top of GNOME 3.x. However, you will get a 2D version of Unity as a fallback for systems that lack the hardware resources for the 3D version. The good news is you will be able to install the entire GNOME 3 desktop along with GNOME Shell directly from the Ubuntu repos.

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