2 Replies Latest reply: Jun 2, 2013 1:06 PM by mende1
Joey MIG Level 1 (0 points)

I have a partitioned Mac Book Pro with MAC OS X and Windows which I believe was created using the Boot Camp software.  I would like to upgrade the parition with MAC OS X to OS X Mountain Lion for the added features, primarily "Airplay."  I know my computer is capable of airplay and just needs the new software.  I do not want to affect the partition with Windows.  I am aware that OS X Mountain Lion has the capability of partitioning via Boot Camp.


If I download and install OS X Mountain Lion from the Apple Store, will it automatically upgrade only the partition with Mac software and leave the other partition alone or will I have to partition the drive again after the upgrade?

MacBook Pro, Mac OS X (10.6.8)
  • Niel Level 10 (298,628 points)

    It'll leave the other partition as is. Back it up anyway.



  • mende1 Level 10 (92,201 points)

    Welcome to Apple Support Communities


    As you want Mountain Lion because of AirPlay Mirroring, check that your computer is compatible > http://support.apple.com/kb/HT5404 If your computer isn't supported, use a third-party application like AirParrot > http://www.airparrot.com


    If you upgrade to Mountain Lion, it will only upgrade the OS X volume and the Windows partition won't be modified, so you can upgrade safely. Make a backup of your data before upgrading, and make a clone of your Windows partition with WinClone or copy the most important files to an external drive. Note that you have to use different external drives to back up them. Check that your apps are compatible > http://www.roaringapps.com