How to Move Space from D drive to C drive in Windows 7, 8, 10, 11

To transfer/move free space from one drive to another drive like from D drive to C drive in Windows 7/8/10/11 without data loss, you can employ a professional partition manager, AOMEI Partition Assistant Professional.


By Cherry / Updated on May 12, 2023

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Why move space from D drive to C drive in Windows 7?

Not everyone’s computer comes with a perfect partition. With the use of disk space, you will face a lot of problems, such as the C drive running out of space. Once your C drive has not enough free space, your PC will run under low performance. Thus, when your C drive is getting a low disk space warning, you need to repartition hard drive to get more reasonable partitions. Here are some true things that happen to users.

Low Disk Space Warning

“My C drive only has 5GB free space left on my PC which runs Windows 7 operating system. Today, when I wanted to install a program on C drive, it reminds me that C drive doesn't have enough free space. So I can only install the program on D drive, which still has more than 100GB of free space. Although I haven't encountered any trouble due to C drive low disk space, I want to move some free space from D drive to C drive. Can you tell me how do I move the space?”
“I used Windows 7 on my computer. And recently, I always got the warning that C drive is running out of space. I have made every effort to fix the problem, but it is useless. Well, I tried to uninstall some unnecessary programs and I also ran Disk Cleanup to free up space on C drive, but it only released a little space. In addition, I tried to run Diskpart to extend C drive, but it says the selected drive cannot be extended. I checked that there is a large free space on my D drive. Is there any other way how to increase c drive space in Windows 7 from D drive?”

Transfering free space from D drive to C drive in Windows 7 does really a good way to increase system partition if there is much free space on your D drive.

3 steps to move space from D drive to C drive quickly 

Windows Disk Management or Windows Diskpart extend partition needs unallocated space next to the partition you want to extend. That’s why users move space from D drive to C drive with Windows tools failed. Fortunately, you can transfer unused space from D drive to C drive directly with AOMEI Partition Assistant Professional without data loss.

Now, check out the detailed steps for how to move space from D drive to C drive in Windows 7/8/10/11 with AOMEI Partition Assistant Professional.

✍ It's available to download the demo version of AOMEI Partition Assistant Professional to preview the operations. 

Download DemoWin 11/10/8.1/8/7
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Step 1. Install and launch AOMEI Partition Assistant. It will display the basic environment of your hard disks. And here you can see your C drive has no free space, while the D drive has much free space. To move free space from D drive to C drive windows 7, here you should right-click D drive, select Allocate Free Space.

Allocate Free Space

Step 2.Then, you can resize partition as you want in the following picture.

Resize the Size.jpg

Step 3. After that, click Apply to submit the operations.

Apply the Operation


Using AOMEI Partition Assistant to move free disk space from D drive to C drive should be the easiest way. Actually, it is featured with various functions, including merging partitions, cloning system disk, converting dynamic disk into basic, etc. To manage disk and partition in Windows Server 2022/2019/2016/2012 R2, you can use AOMEI Partition Assistant Server

Cherry · Staff Editor
Cherry is an editor of AOMEI Technology, she covers backup & restore, hard disk & partitions management, cloud files transfer, website & database backup and so on for AOMEI. She enjoys helping people find solutions to their problems. She loves traveling, cooking, reading and so on. She takes most of time with her family when she is not working.