Situation 1: Combine Two Unallocated Spaces How to Merge Unallocated Space in Windows 10 Here in the following content, we will show you how to make full use of the free disk space by merging unallocated space in these two situations. Suppose that there is one unallocated space, to add unallocated space to C drive in Windows 10 can be a good idea. In addition, low disk space issue often appears, especially for C system partition. While opening the Windows 10 Disk Management, do you find the unallocated space on the hard drive? If there are two unallocated spaces, you probably want to merge them into one and create a new and big partition with the unallocated space for the better disk space usage. When much data is stored on your disk, the disk space is not enough.
