www.makemkv.com

Greetings:
I am brand new to using MakeMKV to rip movies. I just bought a new druve and I am running Linux. My Linux is EndeavourOS and a rolling release based on Arch and my makeMKV is the flatpak verson.

I am needing to make sure it reads encrypted Blurays and what library I need to install. I have bought a key so my version is registered.

THe Libre section states "might be supported in the future, etc..."

My drive is reported as BDDVDRW CT10L. It is a portable laptop style drive.

Help is much appreciated.

Step A is determining what your drive is capable of. There are lists of drives compatible with UHD found here.

Step B is installing MakeMKV, which you say is done already.

The drive capability is the key. It isn't tied to the operating system.