Umbrel now fully up and running on the larger hard drive. Stuff like Jellyfin, Passky, and the nostr relay came up once permissions were corrected. The nodes did not, but it's irrelevant because the main reason for doing this was to go from a pruned node to a full node - which requires re-downloading the whole chain anyway.
So things are where I want them. But waiting for the full node to sync suuuuucks.