By Delia / Last update December 21, 2021

People who do not follow certain rules when using hard drive space may run out of space on one partition while there is still plenty of space on the other partition, and this is the time to merge the two partitions to get more space for use.

Also, if there are too many partitions on the hard disk, it is not very convenient to locate or manage the data. So how do you merge partitions on a Windows 10 computer? Actually, you can do it with the built-in disk management tool.

How to open Disk Management

disk management

First you have several ways to open the tool.

  • Right-click “This PC” > Select “Manage” > “Disk Management”
  • Right-click the “Start” button>select “Disk Management”
  • Press Win+R shortcut > type “diskmgmt.msc” in the input box > press Enter to run

Steps to delete/extend/merge partitions

In the tool's window, find the hard drive you are using, right-click on the partition you no longer need and select “Delete Volume”. The system prompts that the deleting will erase all data, click “Yes”.

delete volume

The space in the deleted partition will be freed up and it will say "Unallocated". At this point, right-click on the partition you want to expand and select “Extend Volume”.

extend volume

Then follow the Extend Volume Wizard and choose to use the unallocated space you just released.

available space

Press “Finish” to confirm the operation. After the Extend Volume operation is complete, you can see that the two partitions you just created have been merged.

merged partition

This is how to merge partitions in Windows 10, but please note that you can usually only merge unallocated space with the partition next to it. If you want to merge two partitions that are not adjacent to each other without affecting the partition between them, you may need to use third-party software.