I'm trying to install Ubuntu (version 20) on a USB drive using a Dell computer with Intel Rapid Storage Technology (RST). The Ubuntu installer complains about a conflict with Intel RST and I'm directed to the following page which suggests how one might resolve this but, from what I can see, with significant risk to the Windows OS already installed:
Given the risks, I do not want to meddle with the BIOS settings as suggested. I am trying to install on a USB drive so theoretically it shouldn't matter about the configuration of the internal SSD. Is there a way to get around this check so I can proceed with the installation onto my USB drive?