If you are trying to power the Toshiba HD from the USB port you will need 
to obtain an external USB hub that can power the disk.

The MBP doesn't have enough power to run that disk.

Cheers

Harry
("`-''-/").___ ..- -''"`.. _
( 6_ 6 )    `-.        (     ``-._.-`)
(_Y_.)'        ._   )  `._ `.'``-..-'
 ` `_..`--'_..-_/  /--'_.' ,'
   ((((,-''  ((((,'  (((.-' fl


On Thursday, July 19, 2012 6:34:05 AM UTC-7, Shields E-mail wrote:
>
> Cannot find the toshiba external hard drive in disc utility although I do 
> have the boxes checked in preferences. I tried both USB ports. Works 
> perfectly with old iBook and iMac just not the MBP. I am stumped. 
>
> -M-

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