Thanks I honestly had no idea what file system to put as, it originally was xfs. But put as reiserfs because I thought they weren't compatible together?
The new disk was put in a new slot, this is my first time installing a disk like this. Typically would just remove an old (current) smaller data drive and replace with larger. This time I wanted to add rather than replace. Will upload full diag zip asap!
Thanks for bearing with me, clearly I barely know the basics 😑