Apple Script that automatically mounts a volume, detects when the volume it's not availble and performs an umount, detects when volume it's online again and mounts it
Save applescript as an application and tick Stay open after run handler
If you want to hide the icon on the app bar:
- Go to
/path/to/saved/app/volume-control.app/Contents - Open
Info.plist - Just before the line
<key>WindowState</key>add:
<key>LSUIElement</key>
<string>1</string>