This is an area I resolved successfully in my original installation. Today I upgraded my 3 rpi’s to Volumio3. Now I can’t share the USB Library drive I have connected to the Pi4.
The drive mounts and I can play music from the library on that pi. When I go to settings on either of the other two and try to add network drive nothing shows up in the autoscan. If I use the path I had used previously - usb/VolumioLib it isn’t recognized.
In the smb config file it looks like this
comment = Volumiolisteningroom USB Music Folder
path = /mnt/USB/VolumioLib
read only = no
guest ok = yes
where Volumiolisteningroom is the name of the pi4 install and VolumioLib is the drive containing the library.
I believe this is the same as prior to the change to Volumio3.
What am I missing.