I have recently bought a new disk for my macbook pro which runs mountain lion.

I have succesfully cloned the old drive to the new drive, but I wish to resize the partitions to take advantage of the additional space.

I have tried using Disk Manager to resize the partition, but it wont let me. I assume this is becuase of the BootCamp partition being in the way. I have also tried diskutil from the console with the same issue.

I have also tried resizing the bootcamp partition whilst it was loaded and that worked fine, but Mountain Lion did not recognise these changes and still showed unallocated space in Disk Manager when in reality this had been allocated to windows.

What I want to do is resize the Mountain Lion partition (HFS+) and the Bootcamp partition (NTFS) to use all of the disk space.

How can I do this?


Try Gnome Partition Editor.

It can perform actions with partitions such as:

create or delete resize or move check label set new UUID copy and paste

Manipulate file systems such as:

btrfs ext2 / ext3 / ext4 fat16 / fat32 hfs / hfs+ linux-swap nilfs2 ntfs reiserfs / reiser4 ufs xfs And many more features

  • 1
    This says that it cant grow HFS+ partitions: gparted.sourceforge.net/features.php – Andrew Hall Aug 26 '12 at 17:06
  • If it can't grow HFS+, then use it to move the Boot Camp partition, and then Disk Utility to grow HFS+ into the freed space. – user3463 Aug 26 '12 at 18:28
  • if that worked in the first place, i could use Disk Utility to resize the HFS+ partition anyway, which it wont let me do! – Andrew Hall Aug 28 '12 at 13:07

In the end, I deleted the BootCamp partition, resized the Mountain Lion partition, then reinstalled Windows on a newly created Bootcamp partition.

Restoring an image to the new bootcamp partition caused BCD errors in Windows and no amount of fiddling with it in Windows Recovery Console would fix it

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