
I suggest you change partition size with server partition software, such as Partition Magic Server and NIUBI Partition Editor.

In Windows 2003 Server, there is no built-in tool to shrink a partition. Then is there an easier and faster way to solve this problem? Yes, shrink D: and expand C. Especially for a server, no one bear it offline for one more minutes. Originally, you have to start over, backup, delete, recreate and restore, what a annoying and time-consuming work. All disk partitions are allocated while building the Server or PC, but things are changing, original partition size may not fit for your needs, the typical example is that system C: drive is full or running out of space.
