CampTune makes your Boot Camp Windows partition freely resizable. You may need to adjust the size of your Windows partition when, for example, you run out of disk space or want to install an application with particularly high storage requirements. CampTune provides a simple slider to redistribute storage space between Macintosh HD and Boot Camp Windows partitions. The resize operation is safe, fast and easy.
In the past, to reallocate free space on your Mac, you'd need to back up the Boot Camp partition, delete the partition, recreate an NTFS partition with a new size and, finally, restore the Windows partition backup to the new NTFS partition, a process that could take anywhere between two to five hours. Fortunately, Paragon Software has developed Camptune X, which achieves the same result in a matter of minutes!