Restore deleted partition after BootCamp

Discussion in 'Windows, Linux & Others on the Mac' started by Ivanko79, Nov 25, 2015.

  1. Ivanko79 macrumors newbie

    Nov 25, 2015
    Hi. Today i wanted to install Windows 10 using BootCamp Assistant. I went through the process and in Windows setup when it asks for drive to be used for installation i clicked on BOOTCAMP partition (internal) 300gb, and message showed up that drive cannot be formatted or found... i tried to fix the problem, but no success. Then i deleted the partition while still in Windows setup. I went back to OS X and could not see that partition. I tried all day to restore the partition and partition is still there (used few programs to check) it is greyed out. I also tried command+option+R went to disk utility tried to resize and no success (after hitting apply, gray again). I attached some images that might help. I got 1TB SATA internal and 1TB external but did not use external. Does anyone knows how to restore partition without reformatting Hard Drive and installing fresh Yosemite?. Thanks!.

    Screen Shot 2015-11-26 at 12.39.56 AM.png 1. This image shows that I lost 300GB Screen Shot 2015-11-26 at 12.41.55 AM.png
    2. This one when BootCamp rejects to help me out.

    3. This one command+option+R (Disk Utility)


    4. This is where its grayed out those 300gb(tried to resize to the bottom, no success after applying)

    5. This is where i returned those 300GB. After applying it gave me back only 470mb!
    6. And this one shows those 472MB instead of 300GB after hitting apply.
    Screen Shot 2015-11-26 at 12.59.58 AM.png

    7. Finally, this one shows those new applied 470MB instead of 300GB in Disk Utility (in Yosemite)
  2. Mike Boreham macrumors 65816

    Aug 10, 2006
    I think the 470 Gb is the Windows recovery partition which gets installed with Windows 10. I was able to delete those by booting from another drive and using the Drive Genius partition tool.
  3. Gogol macrumors member

    Jan 1, 2013
    The Netherlands
    I think you only get the Windows 10 Recovery Partition when you install Windows 10 directly on a partitioned disk and not with Bootcamp.
    I also had to overcome this problem by going into the Recovery console (cmd-R), change GUID to MBR scheme, FAT32, and erase the disk, and putting it back to GUID partition scheme and OSX journaled as I remember it well.
    Of course you need a good backup because you have to start from scratch. I don't know about the use of Drive Genius.
    And of course you need Bootcamp to install windows 10, not an USB stick, to undo everything.
  4. Mike Boreham macrumors 65816

    Aug 10, 2006
    That figures. I did the initial install of 8.1 with Bootcamp, but the inlace upgrade to Windows 10 put a Windows Recovery partition on. Also the inlace upgrade to Windows 10 build 10586 was like another install and put a Windows RP on.

    The first time doing the 8.1 and 10 process it went wrong and I couldn't revert to a single OSX using BCA because of these extra partitions, so I wiped the whole drive from Mac RP and restored from a backup. After succeeding second time around I was able to just delete them using Drive Genius booted from another disk without starting all over. Now I understand what they are I would probably just have left them.
  5. James_White, Jan 7, 2016
    Last edited: Jan 7, 2016

    James_White macrumors newbie

    Jan 7, 2016
    If this is the scenario no need to worry, you can still hope for deleted partition recovery. Here I would like to recommend you to utilize this reliable and trustworthy Partition Recovery software which helps you to recover your deleted partition without reformatting your Mac hard drive. For more information and data related queries you can visit this page:

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