WD My Passport drive external drive will not mount once my Macbook Pro is already on


I actually had this problem for a year or two, but I'm finally getting bugged to this topic enough to see if it can be 'fixed '.

I have a 2 to WD My Passport portable HD connected to my macbook pro via an external (wall outlet) powered TRUST 5 x USB3 Hub.  If everything is connected, when I start the macbook pro there is no problem and the WD My Passport is mounted in the finder.  But if I remove manually the hard drive and then try to mount it again while the macbook pro is running it doesn't mount not.  It used to, but he won't now.

In the past the WD My passport would need to unplug and perhaps the USB3 hub would need power cable disconnect from him and the USB hubs out the macbook pro.  So when I joined this new and plugged the hard drive WD in the hub, it would rise very well.  But now it's just point blank refuses to ride until I restart the macbook pro.  Once I restart it it climbs perfectly and stays up forever--until it is dismantled manually - and then I have to restart the macbook pro again so he could mount once more.

I tried all combinations of pull cables and adapters to power but nothing has worked.  After dismantling the WD hd and plug back on the USB3 light led on the hub hub lights up and the hard drive turns manually, but, as I say, it is not mount and it is not visible in disk utility.

Any ideas please?  It's a bit annoying to have to keep restarting the mac whenever I had to unplug the hard drive WD.


"As issued" WD Passport appear to cause a number of reports of trouble around here. You have already taken the first "not best" - using a powered hub. Just make sure that the hub is really power (lights on, for example). It could be that the external drive is in its death throws.

This happen if the WD is the only thing on the powered hub?

The Mac USB ports work with other devices?

Here's what my experience with these things has believing me. WD made great bare discs, but I can't be so kind to their pens. Three questions:

(1) I think that they should use chipsets which are not very easy to Mac.

(2) most driving the ship formatted for Windows

(3) even those shipped as "Mac editions have some odd which makes it difficult to access file formatting.

If you do not have to share the drive with a Windows computer, you can reformat the drive and that often fixes "fail to mount/recognize" question. Disk utility is your tool of choice here because it is already installed on your Mac. Completely erase the WD drive by selecting the tab 'Clear' in the bar tabs to disk utility. Define the plan of Partition to GUID Partition map and journaled for Mac extended format. Press the button 'clear '. The reader will now will be rid of eccentric WD partitioning and formatting schemes and be a good Mac hard drive.

If you share the road with a Windows computer, consider getting a better workout. After having fought external drives 'brand' on my computers and others that I maintain, I now use only boxes of other computer world with naked WD drives inside. Since this change, I have zero problems. For my MacBook Pro, I use this forum:


I ordered the external power optionally for use at home and go on the road bus-powered. It's an empty envelope - just a hard drive of nu. They are more expensive than the stuff that Staples puts on sale every weekend, but are much more reliable. I ask the question. "What is my value data?"

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