You should show 4.
Review http://community.wd.com/t5/My-Book-Live/GUIDE-How-to-unbrick-a-totally-dead-MBL/m-p/435724 STEP 2 (DATA BACKUP/RECOVERY)
Also you can try debugfs on your Linux system that you have the WD Drive attached.
sudo debugfs
open -b 65536 /dev/sdb4
(use the above on both partitions and ls to check if you are in the correct system)
cd /shares/Public
ls
// look in the listing for the dir you want to backup (i wanted my music back so i chose: Shared Music)
// Press Q to exit the listing
rdump "Shared Music" /home/realbase/Desktop/musicbackup
