Unreadable External Hardrive

I have all my photos on an an WD “My Passort Studio” external drive. ( I have a Macbook Pro, using I-photo). I tried to access the photos today and got this warning: “Your photo library is either in use by another application or has become unreadable”

I tried following the instructions that followed but I still can’t access anything on this ext. drive. Is there anything that I can do??

Thank you

Linda

Try running a Disk Utility test, this will also try to repair any corrupted files. Click on the link below for more information. 

How to test a drive for defects or problems on a Mac