1 Disc and 2 on desktop
Can the bottom one go in the trash
Mac mini, macOS 12.2
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That appears to be an orphaned data volume from an incorrect reinstall attempt.
Open Disk Utility and select that volume in the disk list.
In the info pane, you will see a Mount Point. If it is mounted to /Volumes and not /System/Volumes/Data, click the Remove Volume button (–).