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C: drive has only 100 GB of storage available but 931 GB of Space is in an Unallocated Disk 0 - how to merge them?

Anonymous
2021-01-21T18:51:43+00:00

I created a VM with Hyper-V by mistake and now I have an unallocated Disk with 900 GB of storage sitting there, and my regular C: drive only has 100 GB of storage. How to get rid of the unallocated disk and put all of that storage back on my C drive?

Things I have tried:

Extending C drive

Downloading EaseUS

Windows for home | Windows 10 | Files, folders, and storage

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  1. DaveM121 868K Reputation points Independent Advisor
    2021-01-21T19:27:56+00:00

    Hi Owen

    I am Dave, an Independent Advisor, I will help you with this . . .

    Your PC has two physically separate drives, a 128GB SSD drive and a 1TB hard drive

    You cannot move space between the drives or merge them, because those are two separate drives

    1

    Open Disk Management

    Right click that 931.51GB of 'Unallocated Space' and choose New - Simple Volume

    Accept the defaults and apply that

    That will make that drive active, you will be able to see it in File Explorer and use it for storage . . .

    2

    Because you have a 128GB SSD, you need to move data form that drive to the 1TB hard drive, because SSD drives

    Here is the best way to set up a system with a small system drive and large data drive . . .

    3.

    Move all your User Library folders to D:

    Open Windows File Explorer

    In the right hand pane, right click your Documents folder and choose Properties

    Select the Location tab

    In the Location box, type D:\Documents then click Apply and Ok

    When that move completes, do the same for Pictures, Videos and Music

    Each time, provide a new folder location, for example, Pictures will go to D:\Pictures

    4.

    Move the location of all future content downloaded from the Microsoft Store

    Open the Settings App (gear icon on your Start Menu)

    Go to System - Storage - Change where new content is saved:

    Change all options you find there to D

    Also, for any Apps or games that you may have downloaded, go to Settings - Apps, then select that game or App and there may be a Move option . .

    5.

    If you are a Steam Gamer

    Stop all processes associated with Steam

    Move the Steam folder to your D drive manually

    Then open the Steam Control Panel and point that to the new location

    6.

    Please Note: this should ideally be done before you begin installing any software

    For 3rd party applications, some will allow you to choose an installation location, for those, create a new Program files folder on your D drive, then for each application, create a new sub-folder of that folder

    Other 3rd party applications will not allow you to change the installation location, and there is no safe way to move those to your D drive . . .should optimally be 20% free space, to be efficient and prolong the lifespan of the SSD

    10+ people found this answer helpful.
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