Passport not mounting on Macbook (or any computer)

[ERmorel]

philk13,

Have you tried performing a first aid using the Mac utilities?

See if the following link helps:

http://wdc.custhelp.com/app/answers/detail/a_id/1362/session/L3RpbWUvMTQxMjc5NzU0My9zaWQvUGZRcWxuNG0%3D