First, some background. This computer was running Windows and Linux alongside each other, using grub to allow me to boot into the Ubuntu installation on sda, and the Windows 10 insulation on sdb. All work relatively well until recently.
Rather than continue wrestling with my installation of Linux refusing to update anything (no reason to get into that now), I figured a fresh installation over it was probably a good idea. Since the computer was running Ubuntu, I installed in Ubuntu based distribution over it.
First time, I used the custom installation option, selecting what I thought were the correct partitions for booth, swap, etc. No luck. I got an error saying no such device, unknown file system, entering rescue mode. I figured I had done something wrong, so I allowed the installer to wipe sda completely. No luck here, either - it looks like I got the same exact error. At least, it's the same no such device along with an error prompt.
I'm at a grub rescue prompt. Hopefully, I can work from here to edit the grub configuration, and get into the operating system.
Thoughts?