It's really interesting. Both Carla and I have My Passport 1 terrabyte drives; wdsmartware comes up on hers but not on mine but maybe it's the way we formatted them To answer you question, go into disk utility and select that drive; I think it will show as My Passport. I think you will have to choose the erase tab and erase it first. Then you can switch to the partition tab and format it. Carla's is formatted as Mocosx journald (maybe extended but I can't remember now) so she could run time machine and superduper. Mine is formatted as msdos and it has text and music files on it and works on my Mac, linux, and windows machines. You can see the choices in the pop-up once you select partition. With the My Book drives, which I think may also be western digital, the other software partition that mounted caused problems and I had to go online and find the program to install (from the manufacturer) that prevents it from mounting. on the My Passport that Carla has, this extra mount doesn't seem to cause any problems. Hth. -- Cheryl "Let the words of my mouth, and the meditation of my heart, be acceptable in thy sight, O LORD, my strength, and my redeemer." (Psalm 19:14 Bible KJV) > > Click on the link below to go to our homepage. > http://www.icanworkthisthing.com > > Manage your subscription by using the web interface on the link below. > //www.freelists.org/list/macvoiceover > > Users can subscribe to this list by sending email to > macvoiceover-request@xxxxxxxxxxxxx > with 'subscribe' in the Subject field OR by logging into the Web > interface at //www.freelists.org/list/macvoiceover >