Problem (?) Mounting Hard Drive

I have just installed an additional HD with the Reiser file system as /dev/hdb with one partition /dev/hdb1. I did this while logged on as root. Then I logged on as a user and attempted to access /dev/hdb1 mounted as /data3. I got the following message: Could not mount device. The reported error was: mount: I could not determine the filesystem type and none was specified Then the /data3 directory was displayed in Krusader. My fstab entry is: /dev/hdb1 /data3 auto auto,user,exec 0 0 Obviously, I've missed something. Any assistance will be appreciated. Thanks in advance.