On Mon, Nov 13, 2023 at 02:05:34AM +0100, i...@tutanota.com wrote: > Is that possible or does the first disk needs to be reformattet and > repartitioned before adding a second disk?
You will need to copy your data elsewhere, then re-partition and create the raid mirror, then copy your data back. Currently there is no tool that will convert a plain volume into one part of a raid mirror set with the data 'in place'.
