8 Replies Latest reply: Oct 6, 2013 9:20 PM by AlRoRo
csorensen Level 1 Level 1

I seem to be running into a strange issue with my partition sizes.  I went into disk utility, hoping to resize my Bootcamp partition.  I selected the parent drive Macintosh HD > Partition.  The Utility shows I have three partitions, and that the drive is full, disabling the Partition area.  However, if I select one of the partitions (Macintosh HD or BOOTCAMP), each has free space (see images).  Macintosh HD has 2+ TB free and BOOTCAMP has 5 GB free. 


I have tried doing a disk repair, but nothing gives.  I can't figure out why there are two Macintosh HD partitions listed when I select the parent, and why I cannot remove one of them or merge them together.  I am using a 3TB Fusion drive. Images below display the varying free space according to disk utility. Any thoughts?


Screen Shot 2013-10-06 at 10.10.59 PM.pngScreen Shot 2013-10-06 at 10.11.11 PM.png

Reply by Allan Eckert on Oct 6, 2013 8:22 PM Helpful

Since you attempted to use Disk Utility on a disk with a BootCamp partition, the partition map for the disk is totally corrupt.


The only way I know to fix it now is to repartition the whole drive to a single partition


Then reinstall OS X


Restore all of your data from your backup


Create a new BootCamp partition


Reinstall Windows


Restore data from Windows backup



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