2 Macintosh HD
I upgraded form Mojave to Monterey. Several hours later, somehow a second Macintosh HD is mounted. It's not the Macintosh Data volume, simply a second Macintosh volume.
The Volume mounted first appears to be the main volume. The second volume only has about 15GB of data.
Is it safe to delete the volume mounted second with 15GB of data.
See Link to screenshot below showing the second volume does not say Data.