iPartition

rtition is a comprehensive tool that lets you create disk partitions, resize them, and delete them. It works on both PC and Mac thanks to its compatibility with the GUID partition table. One of the most interesting things about this application is that it lets you resize BootCamp partitions without damaging them or causing problems when booting up. iPartition sets it up automatically, avoiding problems. The application can also resize partitions that hold huge amounts of data without losing any of your files. You can even convert a Mac partition to a Windows one and vice versa. It supports HFS, FAT, and NTFS file systems. For HFS, iPartition can also convert a partition where the file system is case-sensitive to one that's not.