GRUB boot loader won't install

My YunoHost server

Hardware: old computer (64-bit)
YunoHost version: v.11.0.9
I have access to my server : direct access via keyboard & screen
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no
If yes, please explain:

Description of my issue

I am trying to get through the install process documented here: Install YunoHost | Yunohost Documentation

I have tried to install a few times. The sticking issue is the GRUB boot loader, which either experiences a fatal error during the step when I am trying to install it, using the graphical install, or which otherwise fails to actually boot the system after the process is completed.

Here’s the paste of my most recent effort: hastebin

I have figured out that there is a terminal I can open up in the installer. I have also been advised by the installer’s text that I can install the GRUB boot loader on removable media. I am open to whatever works, and that allows me to have a whole new series of problems once I start trying to host applications on a working Yunohost machine :slight_smile: