Merge partitions

How to merge partitions in Windows 10?

Merge partitions means combine 2 disk volumes into a larger one. You need to merge Windows 10 partitions in two typical situations: 1, system C drive or a data volume is running out of space, by combining with other partitions you can convert the disk space to part of the free space in C drive. 2, there are too many volumes causing it difficult to identify the partition and files you want. In this article, I’ll introduce how to combine volume in Windows 10.

Merge Windows 10 partitions

2 ways to merge disk partition

To combine Windows 10 volumes there are two choices: Disk Management snap-in and 3rd-party partition software.

Disk Management is a built-in component of all Windows Operating System, which can do some basic management operations such as create, delete and format volume. In Windows 10 Disk Management, there are advanced functions to change existing partition size. Shrink Volume can reduce size of a single partition and Extend Volume can increase size of volume. There is no “Merge Volumes” functions, but Extend Volume can be used to merge partitions indirectly.

Instead, you may use 3rd-party free partition software such as NIUBI Partition Editor Free. Compare with Windows Disk Management, NIUBI Partition Edition is much more powerful. It provides basic partition management to create, delete, format partition, change drive letter, etc. Advanced management to resize/move existing partition without data loss, copy, hide, set active, convert, defrag, check partition and much more.

Combine Windows 10 partitions with Disk Management

It is very easy to do this, but first you should back up or transfer files. Example to merge drive C and D:

1. Right click Windows on bottom left corner and select Disk Management.

2. Right click drive D and select Delete Volume, disk space of D will be changed to Unallocated.

Delete volume

3. Right click drive C and select Extend Volume.

Extend volume

4. Extend Volume Wizard will be launched, click Next to continue.

Extend volume wizard

5. Simply click Next to continue if you do not want to change the selected disk and space.

Select space

6. Confirm this operation again, click Finish to execute.

Confirm merging

7. In a while, disk space of drive D merged into C drive.

Complete merging

Merge Windows 10 partitions with free partition manager

Step 1Download NIUBI Partition Editor, right click drive D and select Merge Volume.

Merge Volume

Step 2: In the pop-up window, select both drive C and D, and then click OK.

Tips: If you merge two data volumes, you can select the target volume in the drop-down box behind “Merge selected volume to:”. But when merging partitions C and D, you can only merge D into C.

Select drives

Press Apply button on top left to execute. (Otherwise, this operation only works in virtual mode and physical disk drives won’t be changed).

C and D drive merged

Is it much easier? After merging volumes complete, open C drive in Windows Explorer and then you’ll see a fold that is named as D to C(03-27-2018_07-10). All files of D will be moved to this folder. According to the name, you’ll know the accurate date and time.

Folder in C drive

Disadvantages of merging volumes

If you want to combine two data drives in Windows 10, you may follow the steps above, however, if you want to extend C drive by merging D, it is not a good idea, because:

  1. You’ll lose data if you forget to back up or transfer data to other device.
  2. All Windows services, application, shortcuts that point to drive D stop working after deleting.

Instead, you’d better resize Windows 10 partitions, that is to say: shrink D and then extend C drive with the free space, so everything keep the same and without losing drive D.

Watch the video how to resize volume on Windows 10:

As the most popular free partition software, NIUBI Partition Editor Free helps resize, shrink, extend, copy, hide, defrag, check, create, delete, format partition and much more. It is 100% free for home user, 100% clean without bundled advertisement or plugins. To enjoy the innovative 1 Second Rollback technology and bootable media builder, you may consider the pro edition, too.

How to merge and combine partitions in Windows 10?
4.7 (93.33%) 3 votes

Is this article helpful? Rate and share it.