External Hard Drive Not Mounting

Discussion in 'Mac Basics and Help' started by graemesangels, Sep 16, 2008.

  1. graemesangels macrumors member

    Joined:
    Feb 19, 2008
    #1
    Hi,

    I was planning on switching out my Macbooks hard drive with a larger one. I tested the external drive out initially and it was working fine. I then took it out of the case and when I tried to mount it again it said that it had not been disconnected properly and then disappeared and I can't get it to come back.

    Any ideas what might be wrong with it and/or how to fix it?

    thanks.
     
  2. EricNau Moderator emeritus

    EricNau

    Joined:
    Apr 27, 2005
    Location:
    San Francisco, CA
    #2
    Is it visible in Disk Utility (found in your Utilities folder)?
     
  3. graemesangels thread starter macrumors member

    Joined:
    Feb 19, 2008
    #3
    No, it's not showing up there or anywhere else.
     
  4. graemesangels thread starter macrumors member

    Joined:
    Feb 19, 2008
    #4
    I just tried plugging it in to a windows computer and the computer seems to recognize that an external hard drive was plugged in but the hard drive never shows up in my computer. Under device manager it says the drive is working fine but I still can't seem to access it.
     
  5. Consultant macrumors G5

    Consultant

    Joined:
    Jun 27, 2007
    #5
    Windows will not see OSX formatted drive without something like MacDrive.

    Does the drive spin up or make clicking noises?

    One thing that MIGHT work is Disk Warrior.
     
  6. graemesangels thread starter macrumors member

    Joined:
    Feb 19, 2008
    #6
    Thanks for your suggestion Consultant. I looked up the software you suggested and it costed more than the hard drive I bought so I decided to pass on it. I did however find the solution to my problem after a little more searching.

    I don't understand why what I did worked but it did. I wiped(?) the PRAM be restarting the computer and holding command-option-p-r or something like that and voila, the drive mounted no problem.

    Thanks again for your help.
     

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