WD 1TB not recognised on 13" macbook pro retina (late 2013) even though it is exFAT file structure. The same drive is recognised on iMac and an old Dell laptop. I also have a seagate 2TB external hard drive (powered) that is recognised by my macbook pro.

I just bought a late 2013 macbook pro retina 13" a few days ago. I am trying to transfer all my music from my old Dell laptop. I formatted by 1TB Western Digital MyPassport to exFAT to allow read and write on both operating systems. The 1TB WD My Passport is recognised by both my Dell and iMac but not my new macbook pro retina 13 (late 2013).  My 1TB WD My Passport is USB 3.0 with USB 2.0 backward compatability. I also just bought a 2TB Seagate Desktop Backup Plus (which is powered) for backing up and extra file storage, THIS WORKS! I don't understand how this works on my macbook pro but my 1TB western digital my passport doesn't. PLEASE HELP!! I have done full formats as well (not quick ones) which take nearly 8 hours. PLEASE HELP

Is there a pattern to the time of day or other detail that may be
traced back to a OS X system cause of this odd phenomenon?
Are there any copies of system files on any of the attached USB
external drives? Any libraries, such as iTunes, iPhoto, etc?
Once the drives are indexed by Spotlight, are their permissions
ignored by the OS X? Content, if neutral, should not affect the
wake or sleep cycle; especially if they're ignored by the OS X.
Could there be a bad cable or other component? If so that would
be a difficult process of elimination to detect it. Usually replacing
most suspect components in the USB stream (external to Macs)
is a rote way to mechanically test that idea; & not 100% sure.
Does the equipment all have a good ground to the utility or house
electrical field? An intermittent ground may affect more than sleep.
Hard to say at this point. Maybe a late-night talk radio guru on
remote viewing could peer into your situation and sleuth it out?
Sorry to have run out of ideas, but the process must be electrical
& mechanical to some extent. - Or perhaps odd software inspired.
Do you have any phone-home spyware items inside, just jumping
at the chance to spill your information? Little Snitch may help.
PS: Perhaps the computer needs to go into Apple & have a genius
or product specialist at AASP test the unit thoroughly... BlueTooth?
see:
https://www.google.com/?gws_rd=ssl#q=Wake+reason:+XHC1
Good luck & happy computing!
edited 2x

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