How to Merge Partitions Under Windows 7 Without Data Loss

Usually,Many people are able to merge partitions, and there are 2 ways available. One is to use the Windows built-in Disk Management tool, and the other is to ask the third-party partition tool for help.

Today, I’ll introduce these 2 ways to merge C drive and D drive in Windows 7, and users can choose the appropriate one in accordance with actual demands.

Merge C and D Drive in Disk Management

If you want to merge C and D via Disk Management, they need to back up all important data on D drive in advance, because all data saved in this drive will be lost.

Then, let’s see how to merge partitions via Disk Management.

Step 1. Load Windows Disk Management. (Press Win+R to call out the Run box, input diskmgmt.msc and hit the Enter key )

Step 2. Right-click partition D and then choose Delete Volume to release unallocated space.


Step 3. Right-click partition C to choose Extend Volume button. Then, extend volume C from Extend Volume Wizard.

From the demonstration above we know although the Windows Disk Management tool can help us merge partitions, it will lead to data loss unless we backup in advance.

Well, is it possible to merge partitions without data loss? Of course, with the help of third-party partition tool, it is easier to merge C and D drive in Windows 7.

Merge C and D Drive with MiniTool partition wizard

In here, to perform such an operation, it is strongly recommended MiniTool Partition Wizard for help, which offers a bundle of features for Windows users to reorganize their drives while keeping existing contents intact.

Please note: 

1. Drive C and D should be adjacent.

2. Both C and D partitions should be formatted with NTFS. If one of them is formatted with FAT32, please convert it to NTFS in advance.

Step 1. Launch MiniTool Partition Wizard Free version to get its main interface as follow.

Step 2. Select C drive and then choose Merge Partition to enter its operating interface. Please note that the drive letters can be changed from what they are in the running Windows. Use the Explore Partition feature to confirm.

Step 3. Click the Next button to get the following window.

Step 4. Choose partition D to get merged and click the Finish button.

Step 5: Click Apply to perform all changes.

Actually, if there are some unallocated space or more partitions that have much free space, it is more flexible to extend partition rather than merge partition.


After all operations are done, you have finished merging C and D drive in Windows 7 by using MiniTool Partition Wizard, and no data loss is generated.

Comparing these 2 methods, we can find resorting to third-party partition tool is much better since it can help combine partitions without data loss. Follow this article of  merge C drive and D drive in Windows 7 to get more. Just get one to have a try!

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