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Resize Windows Server 2003 Partition without Reinstalling OS and Formatting

How to resize Windows Server 2003 partition? This is a frequently asked question in many tech forums. Why?

Imagine when there's no enough free space on system partition C drive to install new software or download Windows update files; When the system is running out of space but other partitions have a large amount of free space. When receive the system warning "low disk space" and etc. As you see, for these various reasons, any of them that required you to resize partition with no delay.

Resize system and data partition in Windows 2003 with tool

There are many partition software, however, not all of them are reliable and compatible with Windows Server 2003. For example, Partition Magic 8 only works with Windows 98/ NT/2000/XP; besides, some unreliable Server Partition Manager may cause your data loss. According to my experience,the partition magic server software - Partition Assistant Server Edition is recommended. As a server magic alternative, it do resize partition in Windows 2003 and keep your data intact.

Note: Here are both video tutorial and article intorduction, either of them will show up the magic of Partition Assistant on resizing partition in server 2003 with no server reboot. Hope it could help you.

Video Guide

Article Tutorial

Step1: Download server partition tool, and run it. The detailed information of all disks and partitions configuration will be displayed on the disk map. Right click on the partition (here is D) which you want to resize and select "Resize Partition" in the drop-down menu.

Resize Partition Windows 2003

In the pop-up window, position the mouse pointer on the left handle and drag the slider bar rightwards to shrink the data partition to relase some unallocated space

Shrink Partition Server 2003

Step2: Click "OK". You will find a block of contiguous unallocated space behind C drive. Then, right-click C drive, select "resize", in the pop-up window, drag right handle rightwards to "eat" the unallocated space, then you may find the system volume has been increased.

Extend Partition Windows 2003

Step3:Do not forget to click "Apply" on the toolbar to save all changes, . After that, click "Proceed" button to move forward with the process.

Click Apply

When all operations are finished, you will receive a message like the one below. Besides, no reboot is necessary.

Server 2003 Resize Partition

Compare with the following diskpart.exe tool, the Partition Assistant Server is more powerful, convenient and safe to resize partition for Server 2003 without having to reinstalling OS even resizing system partition. In addition to partition resizing, it also lets you merge partitions, allocate free space, merge unallocated space, copy partition and copy disk on MBR and GPT disk, etc.

Download demo version of the software and enjoy it.

Tips: For Enterprise users, Unlimited Edition allows unlimited usage within one company to save time and money, in other words, you can install it on all servers and PCs in your company.

Use Windows 2003 built-in Diskpart.exe Command-Line to resize data partition

Windows Server 2003 allows you to use Diskpart to extend a DATA partition without system page file from command-line interface.

Note: The partition you would like to resize must be NTFS file system and there must be some contiguous unallocated space on the right side of the partition you would like to extend.

To add unallocated space into a data partition and keep data intact, you must first select the partition to give it the focus, and then you can input how large to extend.

Step1: Click "Start" > "Programs" > "Accessories" > "Command Prompt", type "diskpart" and press "Enter" to continue.

Step2: Type "list volume" to display the existing volumes on the disks.

Step3: Type "select volume 0". The number is the data volume that you want to extend.

Step4: Type "extend size=10240".

Then you should receive a message states that Diskpart successfully extended the volume.

Diskpart Resize Partition Windows 2003

As mentioned above, you can only resize Windows 2003 partition under certain conditions:

  • First, the partition must be data volume, but not system and/or boot volume, if you insist on extending system and/or boot volume with Diskpart in Windows 2003, you will receive "Diskpart failed to extend the volume. Please make sure the volume is valid for extending".
  • Besides, there must be the next contiguous unallocated space on the same disk. Therefore, it's best way to use Partition Assistant Server to resize partition in Windows 2003.

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