I formated my windows partition on mac. I want to merge them but i can't.

Discussion in 'MacBook Air' started by polanas2003, Feb 3, 2016.

  1. polanas2003 macrumors newbie

    Feb 3, 2016
    Hello, i know the title is confusing but here is my case. I tried installing windows on bootcamp. Everythng went wrong, i booted up windows and it told me to choose the partition on which i want to install windows on. I knew which one was the one i partitioned for windows. Though like the dumb person i am i pressed format. And i could not do anything with the partition anymore. I cannot merge it or anything. Instead of 128 gb im left with 69 gb cause the others are not accessible. Please help me, i don't know how to deal with this. My question is, how do i make the mac and the formatted partition into one. i tried reinstalling OSX but it makes me choose either the OSX partition or the formatted partition (i can't click on it because it says it is blocked)[​IMG]

    Attached Files:

  2. canuckRus macrumors 6502a


    May 18, 2014
    --- Post Merged, Feb 3, 2016 ---
    128gb not considered large enough for Windows as well.

    Perhaps of help,

    < http://www.cnet.com/how-to/how-to-delete-a-hard-drive-partition-on-a-mac/ >
  3. DeltaMac macrumors G3


    Jul 30, 2003
    The correct method to retrieve the space from a boot camp partition - is to run the Boot Camp Assistant, which will give you the choice to remove the boot camp partition (and merging that space back to your OS X partition.
    HOWEVER, if you have done other mods to your hard drive, like adding more partitions, or using something other than Boot Camp Assistant to modify your partitions (such as Disk Utility), then you don't have many options.
    And - maybe your only option to retrieve all your space - you should erase your hard drive (which will remove all existing partitions, including your OS X partition. That will take you back to the single partition that you want. It ALSO removes anything that you don't already have backed up, such as pictures, music, personal documents, your applications that you have added to your OS X system, etc.
    If you are OK with that, either with a full backup, or you don't care :D , then go ahead with a full erase.

    And, then reinstall OS X. That will give you a fresh install, and all your space will now be available for your use...
  4. Significant1 macrumors 6502

    Dec 20, 2014
    I Agree with DeltaMac, that it should have been done in Boot Camp Assitant. If that is not longer possible and Disk Utility will not do it. I would try to boot (cmd+r) into recovery and try Disk Utility from there.
  5. SpinalTap macrumors regular


    Sep 25, 2003
    Bournville, UK
  6. alvindarkness macrumors 6502a

    Jul 11, 2009
    I had a similar issue recently. Have you tried using the command line diskutil? Start with opening terminal, typing in "diskutil list". You'll get something like

    diskutil list
    /dev/disk0 (internal, physical):
      0:  GUID_partition_scheme  *512.1 GB  disk0
      1:  EFI EFI  209.7 MB  disk0s1
      2:  Apple_HFS Macintosh SSD  511.3 GB  disk0s2
      3:  Apple_Boot Recovery HD  650.0 MB  disk0s3
    In your case hopefully you have free space after your osx partition. Then try "diskutil resizeVolume /dev/disk0s2 R", substituting disk0s2 with the disk corresponding with your osx partition. The "R" at the end just means resize it to the maximum size possible. Diskutil will first run a verify/repair on the partition. If that fails, you will need to repair it by booting to the recovery partition, and doing it there. Once it is repaired, try the command again (you could run it from the recovery partition, wont matter). At least with the command line you get a bit more feedback and verbose error reporting than the disk utility gui.

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