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HT4818: Boot Camp 4, OS X Lion and Mountain Lion: Frequently asked questions

Learn about Boot Camp 4, OS X Lion and Mountain Lion: Frequently asked questions

HT4818 How do I increase the size of my live OS X partition to fill the free space on my hard drive?

1769 Views 8 Replies Latest reply: Jun 18, 2013 5:25 PM by Csound1 RSS
dav1dp0101 Calculating status...
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Jun 18, 2013 10:52 AM

Hi there;


I have a macbook pro 13" 9,2 from mid 2012 with a 500 GB hard drive. I used Boot Camp Assistant to make a partition for Windows 7, 100 GB in size. It worked fine. I then decided to install Fedora Linux as a third operating system on a third partition. This failed hopelessly, and also made Windows unbootable. So I used Disk Utility in OS X to delete the BOOTCAMP partition, and as many of the other partitions created through my Linux attempt. Now I have my Macintosh HD partition (running OS X) using 350 GB of space on my hard drive, a useless 4 GB partition called disk0s4 that I is not erasable via Disk Utility, and 150 GB of empty free space.


I want to restore my OSX partition to it's full size (500 GB), erase all other partitions, and try again with a different OS. However Disk Utility won't let me resize my Macintosh HD partition to be any bigger than it already is. Boot Camp Assistant won't help either, it gives me an error message. Here is my disk utility screen shot:


Screen Shot 2013-06-18 at 1.49.48 PM.png


And here is the error message from Boot Camp Assistant:

Screen Shot 2013-06-18 at 1.50.31 PM.png

Any help is appreciated. Thank you!

MacBook Pro, Windows 7


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