Tried to set up Windows 10 on my Macbook Pro 15" (Mid 2014). Running El Capitan 10.11.3. Windows refused to install (GPT partition only problem?). I followed steps elsewhere to remove and reformat the partition to ExFAT then try and format again through the Windows installer, but this was unsuccessful.

I scrapped the idea and tried to go to Disk Utility to remove the partition. However, if I try to erase the 'Windows' partition (now called Bootcamp), it simply asks me to make another. I can't seem to merge it with the existing Macintosh HD partition?

enter image description here

Now for the stupid, require telling off part: I didn't create a backup prior to this, and I think my recovery partition is ****ed.

Is my only solution to do the internet restore and start from scratch?

EDIT: To clarify, Disk Utility says the volume is functional and I can indeed store stuff there. I just don't want it! See: enter image description here

  • There is no indication that either your OS X 10.11 El Capitan partition or your Recovery partition is damaged. Why do you think so? The Disk Utility normally does not show the Recovery Partition. – David Anderson Apr 8 '16 at 13:45
  • @David Anderson Long story short, I initially had Win 10 working and tried to expand the volume using CampTune. It couldn't find a recovery partition, nor could I create one using this. Since I couldn't get it working, I formatted the volume leaving the result here. – MattKneale Apr 8 '16 at 16:04
  • If you format the BOOTCAMP partition as MS-DOS (FAT), then you should be able to use the Boot Camp Assistant application to remove the partition. If this fails, then commands can be entered in a Terminal application window to remove the partition. I will not post these commands unless necessary. – David Anderson Apr 9 '16 at 11:14
  • This solved the issue, thanks! Managed to reattempt with success so Windows is also now installed. – MattKneale Apr 10 '16 at 20:07
  • Ok, then I will post my comment as an answer. – David Anderson Apr 10 '16 at 20:18
up vote 1 down vote accepted

If you format the BOOTCAMP partition as MS-DOS (FAT), then you should be able to use the Boot Camp Assistant application to remove the partition. If this fails, then commands can be entered in a Terminal application window to remove the partition. I will not post these commands unless necessary.

Try to use Single User Mode to repair the disk.

  • Restart your mac holding command + S
  • Wait until you see small # sign.
  • Type fsck -fy
  • You should see The volume (name of the volume) appears to be OK
  • If not - keep repeating the same command

Hope that helps ;)

UPDATE

To change a volume you can try to:

  • # cd /Volumes/"Name of Volume" in your case #cd/dev/rdisk0s4
  • # /sbin/fsck -fy
  • Thanks @Eimisas. I get to "The volume (name of the volume) appears to be OK" for dev/rdisk0s2, but I believe the volume in question is rdisk0s4. Any idea how I can check that one? – MattKneale Apr 8 '16 at 15:43

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