How do I make OS X my primary boot again?

Discussion in 'Mac Basics and Help' started by Iso79, Oct 15, 2009.

  1. Iso79 macrumors member

    Aug 15, 2007
    I just installed Windows 7 on my MBP and it seems to want to boot to Windows 7 now as the primary boot whenever I boot up. How do I change it back to OS X as the primary?
  2. stridemat Moderator


    Staff Member

    Apr 2, 2008
    To change the default boot partition, boot to OS X by holding down the "Option" key. Once OS X has loaded, go to your System Preferences. Under the "Startup Disk" options, change the Startup Disk to your OS X partition. Once that is set, OS X will, once again, become the default OS at boot.

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