My passport appears on PC but not on Mac

[ERmorel]

Hi,

What is the file system on the drive? 

My recommendation on this case is to take the information out of the drive and reformat the unit to make it compatible with both systems.

See if the following link helps.

http://wdc.custhelp.com/app/answers/detail/a_id/291/session/L3RpbWUvMTQwNjc0MTgzNy9zaWQvVGVqa0tCLWw%3D/kw/windows%20and%20mac/session/L3RpbWUvMTQwNjc0MTgzNy9zaWQvVGVqa0tCLWw=