Free Extend C Drive in Windows 2003 Server Without Losing Data

December 23, 2014

As free Server Partition Magic, AOMEI Partition Assistant Lite enables you to extend c drive partition in Windows Server 2003 without losing data.

Though the size of hard drive is amusingly large today, it is still risk of running out of space under the pour in of applications, browser caches and temporary files. Windows XP and Server 2003 will warn you when it happens as "You are running out of disk space on Local Disk (C:). To free space on this drive by deleting old or unnecessary files, click here." It is also an alarm that you are going to suffer data loss and low work efficiency with the computer. Besides, defragment and more installation are not available. Therefore, you’d better solve this problem as soon as possible. But how can you do to solve the problem?

Ways to Extend C Drive in Windows 2003 Server

To release C drive from overloading, you may think about cleaning up some unused, unuseful and unnecessary applications and data, but it is only a drop in the bucket. Moreover, please do not try to delete Windows files or those files that you are not familiar with. Otherwise, you may encounter unexpected computer crash. The best way to solve this problem is to extend C drive in Windows Server 2003 to optimize disk space usage. To do this, you can either make use of Diskpart or take advantage of a related software, such as AOMEI Partition Assistant. No matter which one you choose, the most critical thing is to ensure the safety and the stability of the computer to make your valuable data in the lowest risk of loss.

Diskpart command-line

Diskpart is a text-mode command interpreter under Microsoft Windows environment. By using scripts or direct input from a command prompt interface, you can manage disks, partitions, or volumes, so you can extend C drive in Windows Server 2003. Besides, you can manage both Basic disks and Dynamic disks. If an NTFS volume is on a hardware RAID 5 container to which free space can be added, you can extend the NTFS Volume with Diskpart while the disk remains a Basic disk. Diskpart is actually the underlying utility which augments the Disk Administrator graphical user interface and enables a superset of the operations which are supported by the Disk Management snap-in. However, you must list firstly and then select the object to give it focus before you use Diskpart commands on a disk, partition, or volume. Only when an object is focused, can Diskpart commands work on that object.

To extend a partition on server with Diskpart, you have to insure that:

  • For Basic volumes, the unallocated space for the extension must be the right contiguous space on the same disk.
  • For Dynamic Volumes, the unallocated space can be any empty room on any Dynamic disk on the system.
  • The volume you are going to extend must be formatted with the NTFS file system.
  • You cannot extend the partition on which the system page file is located. Move the page file to another partition which you do not want to extend.
  • Only data volumes extension is supported.

Diskpart cannot meet people’s needs of extending C drive for Windows Server 2003 without reinstalling another edition of operation system to extend C drive. The shortcomings of Windows Server 2003 Diskpart extend command are listed below:

  • Extension of boot, system, and/or page files volumes is prohibited by Diskpart unless Diskpart is run from a command line by bootable CD.
  • Extend data partition is also impossible if there is no contiguous unallocated space behind it and it is not NTFS file system.
  • It is very difficult for many users to use command line.
  • Data loss may be caused by inputting incorrect orders and the orders cannot be repealed.
  • It stops the Server from running for a long time.

Generally speaking, Diskpart extend C drive for Windows Server 2003 is impossible. If you try to extend, “Diskpart failed to extend the volume. Please make sure the volume is valid for extending” will be received. So, how to resize partition Server 2003 for extending C drive on earth?

For those limitations mentioned above, it’s a wise way to use a third party software to extend C drive for Windows Server 2003 instead of reinstalling another operating system.

Free AOMEI Partition Assistant helps you to extend C drive in Windows Server 2003

AOMEI Partition Assistant Lite Edition can be a good choice to meet your needs. This free software enables Windows Server 2003 users to execute basic and advanced functions without losing any data. Extending C drive under Windows 2003 Server is just a piece of cake.

Step1: Download this free software, install and launch it. Right click the partition you want to resize (eg. Partition E)and choose Resize Partition.

Step2: Left move the bar to get unallocated space from partition E and then click OK.

Step3: Right click partition E and then choose Move Partition. Left move the bar and then click OK. You will see a part of unallocated space is adjacent to partition C.

Step4: Right click the partition you want to extend (partition C) and then choose Resize Partition. Right move the bar to add unallocated space into partition C and then click OK.

Step5: To perform all the operations you have made, please click Apply.


Before you plan to extend partition, you should make sure there is unallocated space and the unallocated space is adjacent to the partition you are going to expand.

It is obvious that the Partition Assistant Lite Edition is easy-to-use. Compared with Diskpart extend command, it is more magic and advanced. However, it still has some limitations even when extend C drive for Windows Server 2003 as you can see in the related article mentioned above. Therefore, there is server edition for you. Have a try in advance by downloading AOMEI Partition Assistant Server version. Then extend C drive in Windows 2003 Server with the help of its step by step procedures.

Tips: For Enterprise users, Unlimited Edition is the best choice to save money. It provides unlimited usage within one company. Once you install it on multiple machines in your company, maximizing business productivity whilst minimizing the total cost of management comes true.