3 Steps to Add Disk Space from D Drive to C Drive for Server Safely

Adding free disk space from D drive to C drive is the effective way to expand C drive to avoid low disk space in Windows Server 2003, 2008, 2012, including R2.


By Michael / Updated on May 12, 2023

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The Situations When Need to Extend C Drive

Situation 1: A new computer is given only one partition on the disk by most manufacturer of desktop or laptop. So you spent time creating partitions to store your data separately. You think the size of each partition is reasonable, but after a long time, the partition mode is unbalanced you realize there is free space in other partition, while C drive is lack of free space.

Situation 2: You have two partitions on your disk 0. The size of C drive is 75GB, and D drive is 50GB. Recently, you find the free space of C drive is only 5 GB, but the free space of D drive is 30 GB. You extremely hope to transfer the free space of D drive to C drive to optimize my computer. Is there a way?

Situation 3: "I am running Windows 2003 Server, the C: drive is only a 4 GB and 60GB on its D: Drive. How can I add space to C drive so I can do Windows updates and install a program?"

Low Disk Space of C Drive Problem in Servers

Each partition has its own size. Take C drive as example, to begin with, the space of C drive is enough for you. However, with time goes by, the space of C drive is becoming less and less due to different kinds of temporary files, Windows system restore data or applications. In this situation, Windows will warn you that your computer is in low disk space all the time. At the same time, the computer speed is slower than before and this will make you have bad mood on your work; then it will affect your work efficiency. You would not be happy to meet this. If you can add disk space from D drive or other drive to C drive, the problem will be solved. But how can you do?

Common Ways to Solve Low Space of C Drive

● Disk Management

Disk Management is a built-in tool in Sever which enables the users to create/shrink/extend/format partition. These features can help the users to manage their partitions. Therefore, most users will choose the tool to extend C drive directly. But the feature of Extend Volume is only available when there is unallocated space adjacent to C drive. The limitation make you can’t expand your partition freely.

● Clean up C drive

You can run the Disk Clean-up feature by clicking on the Low Disk Space popup. The tool can scan your drives and find the files which are allowed to delete safely.

● Uninstall/Remove applications

You can uninstall the applications that are useless for you and remove some applications from C drive to anther drive which has enough free space.

However, the methods mentioned above can’t always help you solve your problem due to its limitation or they only solve the problem temporarily. Because day by day, your data is increasing, one day you will find you C drive are in low disk space again.

Add Disk Space from D Drive to C Drive with Server Partition Manager

AOMEI Partition Assistant Server is professional software for you to manage your partitions. It has powerful features such as allocate free space, covert dynamic to basic disk, convert MBR to GPT, merge partitions, windows to go creator and more features. All features can be supported for Windows 10, Windows 8.1, Windows 8, Windows 7, Vista, Windows Server 2003, 2008, 2012 R2, 2016, 2019 and Windows SBS 2011.

Compared with Disk Management, this software can help you resize partition freely; you will not be blocked by the limitations you encountered with Disk Management. Besides, the visual interface helps you clearly know the reasonable size can be added to another partition and it can demands more your advanced needs.

How to Use AOMEI Partition Assistant Server

Step 1, You can free download the demo version, install and launch the software. Right-click on D drive and then select "Allocate Free Space".

Allocate Free Space

Step 2, Set the size of free space which you want to add to C drive from D drive. Click OK and then click Apply. You will see all the changes.

Allocate Free Space From D To C Drive


With this software, you can add disk space from D drive to C drive safely with only a few steps to avoid the low disk space problem.

Michael · Staff Editor
Michael is a professinal editor of AOMEI editor team.