My wd 500gb hard disk not showing partitions

[penumallusateesh]

I have WD 500GB hdd and i connected as a usb drive and stored lot of information in various partitions. After sometime i couldn't find all the partitions except showing only one patition . How can i get the patitions back or recover all the data. Please Help me.

 

[rgd1101]

http://www.easeus.com/partition-recovery/