My Passport Essential SE 1TB not mounting on Lion : visible in disk utility / working on older OSX

Hello,

I’ve got a problem with My Passport Essential SE 1TB (USB 2.0) that dosen’t mount on my new macbook pro running with OSX Lion.

The disk is mounting on my old macbook with older OSX so it’s not a phisical problem with the disk but seems to be more a software compatibility problem.

I’ve downloaded all the latest version of softwares and firmwares provided on the WD support website but still got the same problem.

If anyone got a clue to help me to back up again my files on this external HDD.

Thanks

what happens if you run first aid on the problematic macbook?