Resize Partition on Windows Server 2003 to Change Disk Volume Size


This guide is about how to resize partition in Windows Server 2003 (32&64 bit) using a server 2003 partition resizing software that works like Partition Magic - IM-Magic Partition Resizer Server Edition.!

Andrew Wright

Updated on Jan 5, 2023

by Andrew Wright

Follow @IM-Magic

Redistribute disk partition space needed

extend c drive

You may partition a hard disk into several partitions on Server 2003 32 or 64 bit, but the space allocated to each partition may be unreasonable sometimes. For instance, you may allocate a small size to one partition while allocating a lot of space to another partition. Under this circumstance, the partition which only has a little space may run out of disk space soon.

You may perform disk cleanup to free space on the partition (It may save up to 10GB), but the free space will be eaten up soon. If so, you may want to allocate more free space to this partition.

For example,

  • if there are more than 50GB free space from other drives, how to redistribute the free space to another drive such as the C drive?
  • Large single C drive? How to shrink c drive without losing data, and create a new partition? (How to shrink a partition without losing data)

Disk Management VS Diskpart VS Partition Resizer Server

Disk Management and Diskpart.exe are provided by Windows. Both of them are built inside of Windows OS computers. Partition Resizer is developed by IM-Magic Inc. (a 3rd party partition software which ensures a safe partition resizing without losing data.)


Disk Management




Partition Resizer Server

Download for Windows 11-7 (Free)
Download for Windows Server (Trial)

Free space adjacent at the right side of target volume



No unallocated space, free space on another drive

1, delete volume

2, extend volume

1, delete volume

2, extend volume

1, shrink volume without losing data

2, Extend volume without losing data

(No deleting volume, 100% data safety)


Move free space, OR move partition NO NO




Shrink volume without losing data YES YES




Extend NTFS volume without losing data YES, when unallocated space is at right side YES, when unallocated space is at right side




Extend FAT32 volume without losing data NO NO




Resize Partition on Windows Server 2003 with 3rd Party Software

IM-Magic Partition Resizer Server is a professional partition resizer for Server users. You just need to download and install it on your Server and follow several simple steps to perform disk resizing. For example, if you want to extend system partition on your Server, you can follow this way:

Step 1:
Download, run the software, and then right click a partition that has sufficient free space and select "Resize/Move" option

resize partition

Redistribute disk space from large volume in Windows Server

Step 2:
Move the arrow to shrink the partition to produce a free disk volume which will be shown as unallocated volume.

shrink large drive on Windows server

Shrink other large partition to produce free space for C drive

free space after shrinking other large server partition


  • 1, If you shrink the c drive closeby partition and move the border right forward, then free unallocated space will be at the right side of c drive
  • 2, If there are partitions stand between c drive and the unallocated space, you may right click the in-between partition, go to Resize/Move Partition, and then move the volume right forward when the mouse shows cross arrows without losing data, move them one by one if there are several volumes in-between, and then the unallocated space will be at the right side of the c drive

Also read: how to move unallocated space

Step 3:
Right click system partition and select "Resize/Move" option.

right click server c drive to extend

Right click c drive to get started with extending c

extend boot c

Step 4:
Drag the arrow to extend the system partition. Click "Apply Changes" button to get system partition expanded.

From the above, you can find IM-Magic Partition Resizer Server is user-friendly software. With it, “Drive C running out of space” problem can be solved easily.

Allocating Free Disk Space on Windows Server 2003

It's much easier to add free space from one partition to another with server 2003 partition resizing tool IM-Magic Partition Resizer.

Reallocated Disk Space for Windows Server 2003, SBS2003

Allocating free space to a partition in Server 2003, you need to resize the disk partition. However, Windows Server 2003 operating system doesn’t have a function to resize the disk partition, so you need to rely on third-party partition magic tool. IM-Magic Partition Resizer Server is able to resize disk partition or allocate free space to any partition on Windows Server 2003 without formatting, reinstalling os and totally without data loss.

You can resize system partition or data partition on server 2003 wiithout losing data.

Extend, Shrink and Move Partition to Reallocated Disk Space Easily

The main functions of IM-Magic Partition Resizer Server include extend disk partition, shrink disk partition and move disk partition. If you only want to shrink a partition, you just need to move the arrow and click "Apply". However, if you want to extend a partition, you may also need to move the partition. For example, you want to extend C drive when it is nearly full on Server 2003 but only F drive has enough free disk space, then you will need to move free disk space produced by shrinking F drive close to C drive.

Resizing NTFS and FAT32 System Partition for Windows Server 2003

IM-Magic Partition Resizer Server supports to resize disk partition in NTFS file system and FAT32 system. When resizing the disk partition, the software won’t change or modify all files stored on the disk. So you don’t need to backup the data before using the software. Even you still don’t need to worry data loss due to unexpected reasons such as power off of computer in the resizing process. On the contrary, even the resizing process is stopped since computer shuts down, it doesn’t cause system breakdown. with this partition software, you can perform extend C drive Windows 2003 in VMware.

Resize Windows Server SBS 2003

IM-Magic Partition Resizer Server is available for all Windows Server OS including Windows Server 2003 and Server SBS 2003. When disk partition has low disk space, especially if a system partition is running out of disk space on Server SBS 2003, it may affect the performance of the Server and lead computer to run more and more slowly or even cause much more trouble. As partition magic software, IM-Magic Partition Resizer Server can fix the low disk space problem easily on SBS 2003.


Question1: How to redistribute disk space on Server 2003?

Answer: Adding unallocated space if adjacent is easy in Disk Management or with Diskpart.exe, however if the unallocated space is not adjacent to the target drive, you may use Partition Resizer Server to redistribute disk space without losing data on server 2003.

Shrink volume without losing data: Disk Management, Diskpart

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