USB drive not recognised unless disconnected/reconneted

Discussion in 'MacBook Pro' started by mrochester, May 8, 2016.

  1. mrochester macrumors 65816

    Joined:
    Feb 8, 2009
    #1
    Hi all

    I've found that if I plug a USB drive into my MacBook Pro while it is asleep or just waking from sleep, OSX will not detect the drive until I unplug and reconnect it again.

    Does anyone know what the problem is and why the drive doesn't just appear?

    Many thanks

    M
     
  2. Fishrrman macrumors G3

    Joined:
    Feb 20, 2009
    #2
    Probably because when the Mac is asleep, or in the process of "waking from sleep", the USB controller isn't "ready" to recognize newly-connected drives yet.

    Solution:
    Wait until the Mac is "fully waked up" and then plug in the drive...
     
  3. mrochester thread starter macrumors 65816

    Joined:
    Feb 8, 2009
    #3
    Bummer. It's only mildly irritating and thought there might be a way to fix it.
     

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