MacBook Pro can't find disk when reinstalling Mac OS X

Discussion in 'Mac Basics and Help' started by hanao, May 23, 2011.

  1. hanao macrumors newbie

    May 23, 2011
    When I turn my MacBook Pro on, an error sign appears. According to the manual I should reinstall Mac OS X, but when i try it can't find any disk for me to install it onto.
    Please HELP!
  2. miles01110 macrumors Core


    Jul 24, 2006
    The Ivory Tower (I'm not coming down)
  3. halledise macrumors 65816

    May 7, 2009
    Hamilton Island, Whitsundays, QLD Australia
    how old is your MBPro?

    try starting up from your install disc and select disc utility when the install screen appears
    you should see the HDD in the pane on the top left side and maybe underneath it 'Macintosh HD'

    select one and click 'repair disk'
    (it won't be greyed out in your case)

    that'll soon tell you whether the disc is ok or not

    Attached Files:

  4. hanao thread starter macrumors newbie

    May 23, 2011
    It is only about a month old.
    I started of with repairing the disc, but it says "The volume Macintosh HD appears to be OK"
    So then I went on to just reinstalling, but it can't find any disc. It doesn't say it, but there just doesn't appear any options.
  5. JediMeister macrumors 68040

    Oct 9, 2008
    It sounds like the drive is not formatted correctly to allow for installation. It must be Mac OS Extended (Journaled). The only way to change the format is to erase the drive, forfeiting your data in the process if you don't have a backup. If you are ok with erasing your drive and reinstalling, here are the steps.
  6. halledise macrumors 65816

    May 7, 2009
    Hamilton Island, Whitsundays, QLD Australia
    call Apple - you have free phone support for 90 days.

    if you have data on your HDD that you don't want to lose, an erase and install will lose it for you.

    Apple may say to take it along to an authorised Apple Store for a tech to look at - they have ways and means - specialist retrieval software, etc.

    that said, if losing data's not that big a deal, erase the fecker and start over!

    I'd still highly recommend the call to Apple techs first ;)
  7. lifesoodbeasier macrumors newbie

    May 24, 2011
    I agree.

    Also, I think when you insert the reinstall disc, you have to press like shift + 4, or C or something. It's been about two years, I forgot.

    EDIT: Also forgot, I'm pretty sure it says which key(s) you have to press on the disc.

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