On my computer there is the option for both Ubuntu and Ubuntu 2D. The laptop (Sony Vaio VGN FS760/W) can't run Ubuntu, only the 2D version.

This has typically been fine, as the two main users default into the last run version which is the 2D. However, the guest session always resets the default to the standard version.

Is there either a way to (preferrably) uninstall that option or force the guest session to default to the 2D version.

Due to the naming, it is tough to properly search for a solution because I am looking for terms like "Uninstall Ubuntu" or "Uninstall Unity", the latter of which I'm not sure I can safely do.

Thanks in advance for the help!