
Download NIUBI Partition Editor and you’ll see the disk volumes as well as the detailed information of each volume. With professional partition software, you can add Unallocated space to C drive no matter it is adjacent or not, on the right or left side. You’ll lose data if you forget to back up or transfer before deleting. Note: Do not delete adjacent volume D to get Unallocated space, otherwise, all Windows services and program in D stop working after deleting. Windows XP and Server 2003 Disk Management has no such ability.Unallocated space shrank from D cannot be added to C drive, except that you can move the Unallocated space to behind C drive.


Shrink Volume functionality can shrink a volume to generate Unallocated case, and Extend Volume can add the Unallocated to a drive. In Windows 10/8/7/Vista, the built-in Disk Management component has the ability to resize partitioned drives.
