Fixing a borked upgrade (1 reply)

I tried going direct from Jessie to the newest Bookworm release on a GoFlex Home, that boots off the hard drive.

While trying to upgrade everything I was riding the waves of successes and failures.... until I somehow lost the ability to check passwords. Sudo just kept returning failure notices without me being allowed to enter a password.

I figured I'd try a reboot, but somehow ssh is no longer running so I cant connect. I know the machine is running because my router sees it.

Whats my best option for fixing this? I prefer to remove the HD and repair it on another computer (not sure if that possible). I do have serial access as I made a connector when I set it up. I dont have the drivers for it anymore, but Im sure I can figure out a way to communicate with it if need be.

I dont remember much else. I do have the OLD uBoot. I havent used this much in a long time, I was going to try and put pi-hole on it.

Thanks for any direction you could give me.