I have been using Ubuntu 16.04 for several years on a System76 Gazelle, but after a recent update, the OS will not boot and instead displays either a black screen or error messages. I am now trying to overwrite the OS with a newer version (Ubuntu 20.04) from an external Solid State Drive. The issue I am having is that the SSD does not appear as an option from my Aptio Setup Utility.
Any help is much appreciated.
