Microsoft released 64-bit versions of every edition of Windows Vista except for the Starter edition. These editions can run 32-bit programs by running them within the WOW64 subsystem. Most 32-bit programs can run natively, though applications that rely on device drivers will not run unless those device drivers have been written for 64-bit Windows. Older hardware doesn't have the necessary support to get the drivers written.
Because of the unique feature of vista 64 bit systems, its partition management should be carried out with different partition manager.
As a 64 bit partition manager, Partition Wizard is the best partition manager for Vista 64 bit systems and provides safe, easy and fast partition management.
Partition manager for Vista 64 bit - Partition Wizard
As the leading Partition Manager, Partition Wizard is a professional partition manager with powerful functions in partition management.
MiniTool Partition Manager support both MBR and GUID partition table format running on 32/64 bits operating system, including Windows XP, Vista, Windows Server 2000/2003/2008 and the latest Windows 7.
You can also carry out some advanced functions, such as rebuild MBR, convert DPT (disk partition table) format from MBR to GTP, and recover data, move/resize system partitions, convert file systems and much more.
This partition software can take the place of more expensive partition management software, such as Partition Table Doctor, Partition Magic as well as Paragon Partition Manager.