Free to Merge C and D Drive in Windows 10 to Get More Space on C Drive

How do you merge two partitions C and D in Windows 10 so that you can get more space on C drive by combining C and D drive into one partition on your computer? A Windows 10 PC usually has four partitions namely C, D, E, F, among which C drive often works as system partition for Windows 10 OS installation and system related data storage. By default C drive has small size because PC users usually do not allocate too much space to this partition, so you may find that C drive easily runs out of disk space on Windows 10 after a long time usage but other partitions are still empty. In this situation, you may want to merge C and D drive to redistribute more space to C partition on Windows 10.

Free to Merge C and D Drive on Windows 10 with Disk Management

Probably, you still have some other reasons to combine C and D drive into one partition on Windows 10, but you may want to look for a free solution to accomplish this task. Without relying on any other software, you can merge two partitions on Windows 10 under Disk Management.

You probably know that Windows 10 Disk Management enables you to mange disk space with ease, but you may also realize that there is no Merge Partition option under Disk Management of Windows 10. Then, how can you merge C and D drive with Disk Management in Windows 10?

Follow the steps below to merge C drive and D together by Windows 10 Disk Management:

Preparation: Move all important data from D drive to another drive or storage media.

Step1. Open Disk Management on Windows 10 by right clicking This PC on desktop > click Manage > click Disk Management.
Step2. After entering Windows 10 Disk Management, right click D drive and then click Delete Volume option.

delete partition
Step3. The D drive will show as unallocated volume when the deleting is completed. Then, right click C drive and click Extend Volume option.

extend partition
Step4. Follow the Extend Volume Wizard to allocate the unallocated space to C drive.
Once the Extend Volume is finished, you will find that D drive no longer exists on your computer and all space on D drive has been added to C drive.

Merge C Drive and Some Free Space on D Drive in Windows 10

It is easy to lose important data by deleting D drive and then add the unallocated space to C drive on Windows 10. In fact, there is no need to delete D drive, you can squeeze some unallocated space from D partition instead of deleting this partition on Windows 10.

Follow this guide to squeeze some unallocated space from D drive on Windows 10 and then add the unallocated space to system partition C:
Open Disk Management on Windows 10 > right click D drive and then click Shrink Volume option so that you can get some unallocated space > right click C drive and then click Extend Volume option so as to add the unallocated space to this partition

Pay attention:
If the unallocated volume is not adjacent to C drive, you will fail to add it to C drive because the extend volume is grayed out when there is no contiguous unallocated space.

Free to Combine System Partition with D by Partition Software for Win10

You can use partition software for Windows 10 to combine system partition with D drive or reduce D drive space to increase the size of C drive on your computer. IM-Magic Partition Resizer Free is a free partition magic tool which enables you to delete or shrink partition to create unallocated space. This partition software also allows you to move partition when you need to move the unallocated space close to system partition on Windows 10.

resize partition

Download IM-Magic Partition Resizer Free Edition

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