How to Boot Up From Disc? (Pressing C while starting up doesn't work)

Discussion in 'Mac Basics and Help' started by xtine911, Jan 13, 2011.

  1. xtine911 macrumors newbie

    Sep 14, 2010
    I was trying to boot up from my Snow Leopard disc last night to run Disk Utility (to repair my hard drive). I pressed C while starting up but it took me right to my login screen. I did this several times, no luck. I'm using a 15" MBP btw.

    I also tried the same thing on my sister's MacBook (using her own install disc) -- same thing, straight to login screen.

    I know pressing C used to work before because the MacBook used to belong to me and I did an erase & install before passing it down to my sister.

    Is there anything I'm doing wrong?
  2. Damo01 macrumors regular

    Feb 11, 2010
    hold down the alt key instead next time you reboot and select installation disk.
  3. xtine911 thread starter macrumors newbie

    Sep 14, 2010
    Tried that too (both with the MacBook and the MBP) and I got a picture of a lock. I couldn't do anything except hit the power button to restart again.

    Could that mean there's something wrong with both hard disks? Ran a disk check on Disk Utility and it says that my hard drive "appears to be ok." (for the MBP)
  4. balamw Moderator


    Staff Member

    Aug 16, 2005
    New England
  5. xtine911 thread starter macrumors newbie

    Sep 14, 2010
    That's it! :D

    I set this up a few months ago and forgot all about it.

    Thank you so much!

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