Windows 10: How to partition unallocated hard drive space?

I re-installed Windows on one of my computers. The hard drive is 4TB. After Windows installed I see that the C:\drive is only 2TB and there is Unallocated space of 1678TB. When I right click on the unallocated space all options except for Properties and Help are greyed out. How do I create a partition on this unallocated space and format it to use as another partition. I really don't want to start all over and re-install the operating system and all my applications. I would like to use this unallocated space as another partition.

:)

 

Unallocated Space to C Drive

Thanks

 

Unallocated Space to C Drive

Hi Travis,

It appears that a disk partition was created but was never assigned its allocation. Assuming there are no files stored in the unallocated partition, perform these steps to combine it with your C: drive:

• In Disk Management, right-click on (C which appears next to the
  Unallocated partition.
  
• Select Extend.

Let us know if you're able to combine the spaces after following the steps above.

Regards.

 

Not Getting Able to Merge Drive with Unallocated Space!

You should be able to right click on partition I:, in Disk Management, and select Extend volume... to add the unallocated space to partition I:. It should be as simple as that. You can't "merge" unallocated space with a partition, because unallocated space is not a partition. To "merge" 2 things those things need to be the same type of thing.

And no, it's not illegal to copy files to another drive.