14 Dec 2020, 13:40

unless you put recalbox in your /etc/host table or in your routers DNS it's not going to know by host name.

Try:
smb://192.168.1.X/share

what ever IP address you gave your recalbox, also like @francix said, can you ping your recalbox?

I am pretty sure you need the wifi to say connected in the menu, try turning wifi off, reboot and then turn in on and connect and see if it connects.

one connected then try

Apple Key + K
smb://192.168.1.10/share

Also, looking at your post you need the "/share" at the end of your smb mount command.