I don't know if this helps, but while I was trying some other things I ran mount (when logged in as pi) and this was the result: //192.168.20.1/usb0_1 on /mnt/NAS type cifs (rw,relatime,vers=1.0,cache=strict,username=pi,domain=BRCM-SAMBA_TEST,uid=0,noforceuid,gid=0,noforcegid,addr=192.168.20.1,unix,...