# Boot Camp Assistant: “Your disk could not be restored to a single partition.”

I want to delete my Windows partition and regrow my Mac partition to use the whole disk. But when I click Restore in the Boot Camp Assistant, it says:

Your disk could not be restored to a single partition.

An error occurred while restoring the disk to a single partition.

I'm using Mac OS X 10.8.5, on a mid-2009 MacBook Pro.

• Lol, StackOverflow gave me a Popular Question badge for this. Zero upvotes. – mcandre Jul 22 '14 at 13:50

WARNING: This answer may cause a problem with El Capitan! Read Warren Pena's comment below. If anyone knows how to get the disk space back on El Capitan after doing this then please comment below.

I had this issue and I solved it by doing the following.

1. Go to "Disk Utility.app"
3. Click "Erase" and select "Mac OS Extended (Journaled)"
4. Erase the partition
5. Once that has completed, select the Complete Disk (Not Partitioned)
6. Now select "Partition"
7. Select the newly Formatted "Windows" partition and select the "-" symbol at the bottom to remove the partion

8. You should see an empty space where the partition was

9. Select your main partition, and to the right where it says "Size", type the Disk's full size and hit enter

10. After Disk Utility completes the resizing, you should now have a single, full partition again.

• This might have been effective at the time, but it ended with a rude surprise for me on El Cap: The Boot Camp partition is gone, but the space it was using is also also gone. It's not available for me to reallocate to the main OS X partition! – Warren Pena Jun 13 '16 at 5:05
• Worked for me on Sierra – geometrikal May 20 '17 at 20:09
1. Go to Disk Utilities
2. click the Windows Partition and then Format It as Mac OS X Journaled
3. then click Enable Journaling on the Disk Utility Toolbar
4. then go to the MAIN DISC and Click on the Partition tab
5. remove the Windows Partition which is now "Mac OS X Journaled"
6. after removing it, resize the partition size of the main partition to the maximum

Then, you should have your full sized disc for use and you can use bootcamp later.

• In newer versions of Disk Utility, "Enable Journaling" is available under the File menu. – tutuDajuju Nov 8 '15 at 9:04
1. Go to Disk Utilities
2. Select Windows partition and make sure you MOUNT IT