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Thread: Gray screen

  1. #1


    Member Since
    Nov 02, 2012
    Posts
    5
    Gray screen
    I am getting the Gray screen with Folder and Question mark on bootup.

    I am told by Apple man that I need to remove data from HD or install external HD?

    1. Will External HD work with no OS installed on it?
    2. Will external HD accept a new OS install? (I am led to believe an OS can only be installed on an internal HD).

    can anyone offer any suggestions/alternatives please .

    thanx...

  2. #2


    Member Since
    Apr 24, 2009
    Location
    UK
    Posts
    746
    Specs:
    MacBook Pro 15" 2.8 GHz
    It's most likely your hard drive has failed. Do you have a backup?

    An external hard drive will do nothing without being initialised and having an OS installed on it. Yes, you can install an OS on an external hard drive. It will run slower than an internal drive, replacing the internal drive is the better option. What Mac do you have, what OS was installed?
    Steve
    UK

  3. #3


    Member Since
    Nov 02, 2012
    Posts
    5
    Hi Steve thanks for the response.
    I'm not with the iMac at this time so cannot answer your question about model etc ..
    I think it is a 24" & around 2008/9.
    Looks like.a new HD is the way to go.

    Does it have to be a Mac HD or are they all the same?

  4. #4


    Member Since
    Apr 24, 2009
    Location
    UK
    Posts
    746
    Specs:
    MacBook Pro 15" 2.8 GHz
    Any 3.5" SATA 7200 rpm drive would be suitable. Only the newer late 2009 21.5" and 27" onwards require Apple hard drives due to issues with their temperature sensors.
    Steve
    UK

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