Is 12.04 upgradable?

[Nils Kassube]

Robert Heller wrote:
> Having failed to install 18.04 on my desktop machine (with preexisting
> Software RAID and LVM),

> The 18.04 installer images (both desktop
> and server) fail to install -- the desktop because it lacks the
> software RAID tools and the server image because it appears to be
> broken it starts the RAID and sees the LVM, during boot up, but the
> storage scan fails -- it seems to not like my separate RAID array for
> my /boot file system -- the Python code crashes.

Did you try to install 18.04 from the mini.iso? I'm not sure if it would
work with your setup, but at least it is worth a try. See
<https://help.ubuntu.com/community/Installation/MinimalCD> for details.


Nils