floppy_drive_volume_empty
The option documentation is properly formatted yet
Description: "Empty Floppy Drive Volume" Type: integer Default: 25 Example: 0 Range: 0 - 100
Set volume to 0 to disable floppy drive clicks when the drive is empty. Max volume is 100.
Source: https://github.com/FrodeSolheim/fs-uae/blob/master/docs/options/floppy_drive_volume_empty