So I found this article Moving PMS ‘Library’ which helped with the issue. I was able to move the metadata to my 4tb external drive with some minor issues that I eventually figured out.
I partitioned part of the external drive drive using the steps in Raspberry Pi Mount a USB Drive Tutorial where I had to modify the sudo nano /etc/fstab in order for the partitioned drive to be recognized on my pi.
After, I went to my server’s link http://[IP ADDRESS]:32400/web, had to go through the first time steps, but all the metadata from before was reloaded with no issues.
I checked my SD size and it now had enough room that I was able to implement the sudo apt-get update && sudo apt-get upgrade
