Vitux published a tutorial about how to format a harddisk partition with BTRFS on Ubuntu 20.04.

How to format a harddisk partition with BTRFS on Ubuntu 20.04

Btrfs or commonly pronounced as b-tree FS or butter FS is a COW (copy-on-write) based disk storage format and filesystem. In btrfs, all characters except / and Null are applicable for creating the files featuring self-healing and the capability of spanning multiple volumes. It was initially developed by Oracle in 2007 and developed by multiple companies such as Redhat, Linux Foundation, Facebook, suse, etc.

How to format a harddisk partition with BTRFS on Ubuntu 20.04 – VITUX