Yeah, imaging the backup drive now. It's a lot of data. There is one tool existing that can find the files but it seems to only log their locations, so I will seek to fork that and make it recover the possible files and then I just need to install core on a machine and try them until I find the most current one, and dump all of the secret keys of all, anyhow
I know what's required I just literally did not know non hd keychains were a thing and didn't make sure I was using one.
HD is easy to secure against loss. Nondeterministic is a huge pain.