I am attempting to mount Windows volumes on a Synology DS (running DSM 5.0, a Debian-based distribution). Command lines of the form: mount -t cifs -o username=<user>,password=<pass> //<IP address>/share/ /mnt/<mountpoint> succeed. However, command lines of the form: mount -t cifs -o credentials=<filename> //<IP address>/share/ /mnt/<mountpoint> fail with the error "Invalid argument". For diagnostic purposes, I have attempted to mount the volumes directly using mount.cifs (v5.5). Once again, commands of the form: mount.cifs //<IP address>/<share> /mnt/<mountpoint>/ -o username=<user>,password=<password> succeed. However, commands of the form: mount.cifs //<IP address>/<share> /mnt/<mountpoint>/ -o credentials=<file> fail with the error message: error -1 (Unknown error 4294967295) opening credential file <file> This is the case regardless of the location of the file (see http://samba.2283325.n4.nabble.com/Error-s-opening-credentials-file-td2518214.html) or its privileges. The error persists, even when the command is executed from a root session and the credentials file has permissions 0777 and is in a subdirectory of /root. How can I get mount to work using a credentials file? -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html