1 TB SSD not showing full storage capacity

[Ikari917]

Recently I upgraded the SSD on my HP ZBook 15u (Windows 10) from a 500 GB drive to a 1 TB drive. Cloned the hard drive, replaced it in my laptop. Everything appears to function well, except that it does not show the proper disk space. It claims that the drive is ~500 GB, not 1 TB. 

I went through Disk Management and it doesn't show any unpartitioned space. There are small particians for recovery and the main C partition, but that's it. Together, it does not allocate for the full 1 TB. The computer sees the correct model number for the memory (Kingston SA1000M8960G). Drivers are all up to date. 

In BIOS I cannot seem to locate the drive, but I can run a drive test. It says that SMART passes and Short DST is not available. So I cannot see in the BIOS if it reads the proper disk space. Is this a BIOS issues? It was updated in August 2018, so maybe I should update that. But is there anything else that may be done in order to get my computer to recognize the full disk space of the new SSD? 

As I said, other than displaying half the space it should, everything else appears to be functioning properly. Laptop boots up and is functional. 

Thank you

[banhien]

@Ikari917

Well, you cloned 500GB to 1TB, the cloning process took 500GB and gave the rest as unallocated space. Now, please use Disk Management tool to assign unalloacted space and give it a drive letter , for example 😧 or you can merge to C: if you wish. The following tutorials will help you to assign 😧 to unallocated space.

             https://www.disk-partition.com/articles/how-to-add-unallocated-space-to-d-drive.html

Regards.

[Ikari917]

So this thing is, I had looked into the Disk Manager prior to making my post. It doesn't show any unallocated space.