There are several possible reasons for a Boot Camp configuration not to be found on your Mac.
1. Camptune X can’t resize encrypted partitions, for example protected with FileVault.
You will need to deactivate FileVault before starting Camptune X:
Go to System Preferences — Security & Privacy — FileVault and turn FileVault off.
2. Core Storage configuration.
Older versions of Camptune didn’t have Core Storage support. It’s recommended to update your Camptune, especially after upgrade to Mac OS X 10.10 Yosemite.
First Camptune version which supports Core Storage is 10.7.355.
More information can be found here: Core Storage support in Camptune.
3. Some minor drive errors.
There might be some minor drive errors which are not indicated by the system. To fix them please follow this guide: How to repair Mac OS X and Bootcamp partitions.
5. Logical volume between Mac OS X and Bootcamp partitions.
If you have more than one partition aside from your Mac OS X and Bootcamp partitions, if it is in between those two, Camptune will not be able to redistribute space.
Here is an example of another HFS+ partition visible in Disk Utility. “Macintosh HD 2” is a second partition which stands between Macintosh HD (which is the Mac OS X system partition) and Bootcamp:
NOTE! Camptune X recognizes Apple Boot and Recovery partitions and changes their location on the hard drive if required.
4. It can happen that you have an unusual Boot Camp configuration that is not detected by Camptune X. In this case please submit a support request from your personal account section on our website and provide the following technical details:
sudo fdisk /dev/disk0
disk2if third, and so on.