First, some background: the CIFS drive I am trying to mount: PASSPORT2TB is connected via USB to a small wifi AP running OpenWRT, and it is shared via the Samba server on that (OpenWRT) host. I want to connect to PASSPORT2TB from my two RPi boxes; one runs jessie, the other runs stretch. I do not have an entry in /etc/fstab for PASSPORT2TB on either of the RPis. RPi:stretch is a new install on a new 3B+; RPi:jessie was recently upgraded from wheezy, and has an operational mount point that has worked for... years.

Here's the exchange when I attempt to mount PASSPORT2TB from RPi:stretch:

sudo mount -t cifs // ~/mntPassport
Password for root@//  ********
mount error(112): Host is down
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

I've searched for an answer, and tried the -o option as follows with no success (you may have to scroll horizontally to see the entire line):

sudo mount -t cifs // mntPassport -o guest,vers=1.0
Retrying with upper case share name
mount error(6): No such device or address
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
sudo mount -t cifs // mntPassport -o guest,vers=2.0
mount error(112): Host is down
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Anyone know what is causing this - or how to correct it?

2 Answers 2


Here's how to overcome this issue:

sudo mount // ~/mntPassport -o username=guest,password=,vers=1.0

That said, be aware that there appear to be some "issues" and new twists in the code in Raspbian "Stretch":

  1. Whereas Jessie & earlier were happy with username or user, Stretch insists upon username

  2. The man page for mount.cifs states for the version option:

    vers=SMB protocol version. Allowed values are:
       ·   1.0 - The classic CIFS/SMBv1 protocol. This is the default.

But this is NOT the default, and therefore the man page is INCORRECT as vers=1.0 MUST be specified for this to work in Stretch. (see above)

  1. Using vers=2.0 or vers=3.0 will both fail on Stretch

  2. And finally, the error message provided by Stretch is useless:

    mount error(112): Host is down


I just went through the same issue. My solution was to add ",vers=1.0" to the -o list of options. I know I am not supposed to say thanks in Stackexchange, but I found the solution in another post on SE- Debian.

This worked in fstab Jessie, but not Stretch: //nst-600nu/PUBLIC /mnt/nst-600 cifs username=guest,password=guest,workgroup=MSHOME,users,auto,_netdev,user_xattr 0 0

This works in Stretch: //nst-600nu/PUBLIC /mnt/nst-600 cifs username=guest,password=guest,workgroup=MSHOME,users,auto,_netdev,user_xattr,vers=1.0 0 0

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