Macbook pro M1 cant add external Hard disk

[mjw (Father! Father! Resist not! Let us destroy the core! Set us free!)]

Welcome to the community, @Jorn_Bressem.

Please provide more context and information about your setup and the problem you have.

This guide explains how to start a Support thread.

I'm having a problem with Roon -- how do I report it?

How To Get In Touch With Roon Support If you’re having a problem with Roon and something isn’t working as expected, you’ll want to make a post in the #support category. To help our team resolve your issue, please make sure to describe the issue, and describe your setup. Describe The Issue When you start a thread in the #support category, make sure to include: What’s not working How often the issue occurs This could be “every time I start the app”, or “every time I click a certain button”,…