What to do when I deleted OS X and now I only have Windows 8.1

Discussion in 'OS X Yosemite (10.10)' started by kjusielvi, Sep 23, 2015.


Should I reinstall OS X (I'm fine with Windows)

  1. Yes

  2. No

  1. kjusielvi macrumors newbie

    Sep 23, 2015
    I am using a Macbook Air 7.2. After installing Windows 8.1 using Bootcamp, I used MiniTool-Partition-Wizard-Professional-8.1.1 and Windows Disk Management to delete a 39 GB partition. Only later did I found out that it was OS X Yosemite. Now I only have Windows 8.1 and the 39 Gb partition is used for storing data.

    My questions are:

    - Can I reinstall OS X? If yes then how?

    - If I don't reinstall OS X, will my warranty be void?

    Thank you.
  2. allan.nyholm macrumors 6502a


    Nov 22, 2007
    Aalborg, Denmark
    If you can delete a partition with this program for Windows can you also then create a new partition for your OS X installation?

    If you can then you should be able to boot into Internet Recovery as told here: https://support.apple.com/en-us/HT201314

    You then get the option to download the OS your machine came with and possibly install it on your newly created partition for OS X.

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