How to Merge Partitions in Server 2003 without Losing Data?

Wanna merge partitions in Server 2003? This post tells how to merge 2 partitions without data loss in Windows Server 2003 via 3 steps.


By Emily / Updated on May 12, 2023

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Merge Server 2003 partitions for more Space

User case: My computer prompts me that C drive is running out of space. I would like to merge another partition, which stores little data, to C drive to extend it with more space. So, anyone has any suggestions on what software I can use to merge 2 partitions in Server 2003 without reinstalling Windows 2003 server and repartitioning hard drive.

Maybe many users meet this situation. In fact, when meeting this problem, to ensure Server run smoothly and improve computer performance, the common way to get free space is to merge another unused partition and the Server 2003 C partition into one.

How to merge partitions in Server 2003?

Usually, many users will directly turn to Server 2003 Disk Management to merge 2 partitions into one. Unluckily, the Server 2003 native Disk Management does not offer “Extend Volume” or “Shrink Volume” features.

Server 2003 Disk Management

So, it is necessary to use a third-party partition manager like AOMEI Partition Assistant Server. This software is designed for small and medium businesses,compatible with Windows Server OS and Windows 10/8/7. It provides powerful functions in managing disk and partition, such as resize partition, create partition, extend partition, move partition, merge partitions, split partition, and so on disk-related tasks. To merge partitions, you just need to execute the following 3 steps (there is free Demo Version).

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①The two partitions you need to merge must be adjacent.
②You can merge data partition into system partition, but cannot merge system partition into data partition.
③Before you merge partitions in Server 2003, you’d better backup your important data by AOMEI Backupper.

Step 1. Install and launch AOMEI Partition Assistant Server. Right-click the C drive and choose "Advanced" >  “Merge Partitions”.

Merge Partition

Step 2. Next, tick another partition and click on “OK”.

Tick Another Partition

Step 3. Click on “Apply” and “Proceed” to commit the pending operation.


This is how to merge 2 partitions in Server 2003. If there is some unallocated space, you can also merge the unallocated space with C drive by AOMEI Partition Assistant Server. Here let’s look at the steps about merge Server 2003 partitions with unallocated space.

1. Right-click C drive and click "Advanced" > ” merge partitions”.

2. You can merge c with the unallocated space. Click “OK”.

Choose Unallocated Space

3. Click “Apply” to finish this operation.


This article tells you how to merge partitions Server 2003 without repartitioning hard drive or losing data under the help of AOMEI Partition Assistant Server. Besides, to extend Server 2003 partition, you can also use the “Allocate Free Space” feature to directly transfer some free space from one partition to another.

Moreover, it has many other advanced functions: transfer Server OS to new hard drive, convert disk to MBR/GPT without deleting partitions, convert dynamic disk to basic one without removing volumes, clone hard disk, recover lost partitions, wipe hard drive, securely erase SSD and more.

Emily · Staff Editor
Emily is an English editor of AOMEI Technology; she has a great passion for providing easy solutions for people to tackle with all disk or partition management problems. In addition to writing articles about disk/partition management, she also edits great tutorials on how to back up and restore disk for data security. In her spare time, she loves to learn computer skill to improve herself or stay with her family to enjoy a good day.