The initial Disk-manager screen proposed me to deleted to fstab lines
LABEL="Data" /media/Data ext4 defaults 0 2 LABEL="Multimedia" /media/Multimedia ext4 defaults 0 2 where the label is inclosed in quotes.
In this example, quotes are not necessary but they could be if the actual labels were to countain special characters (spaces).
The initial Disk-manager screen proposed me to deleted to fstab lines
LABEL="Data" /media/Data ext4 defaults 0 2
LABEL="Multimedia" /media/Multimedia ext4 defaults 0 2
where the label is inclosed in quotes.
In this example, quotes are not necessary but they could be if the actual labels were to countain special characters (spaces).