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Windows 10: Move Unallocated Disk Space to C drive

Updated on Nov 30, 2018 by Brithny to Partition Master

Summary:
Want to move unallocated disk space to C drive in Windows 10? This page introduces you a step-by-step guide about how to extend C drive with unallocated space.

How can I move unallocated disk space to C drive in Windows 10

I partitioned my laptop disk into two partitions, partition C, and partition D when I bought it two years ago. The C drive is only 10 GB and D drive is 65 GB. Now I find that the system drive is too small to perform well. So I want to shrink D drive to create some unallocated space, and then I can extend C drive with unallocated space. However, I have no idea how to merge unallocated space into C drive. I am using Windows 10. Any suggestions will be appreciated!

Merge unallocated space to system partition in Windows 10 is an easy and efficient solution when C drive is full problem happens. Have you ever encountered such a situation? Don’t worry! This page will talk about how to merge unallocated space with C drive to increase system partition space with third-party Windows 10 partition magic tool. Read it and you can find a step-by-step guide about how to do the job. 

Guide about how to move unallocated disk space to C drive in Windows 10

Usually, you can easily add unallocated space to C drive by Disk Management in Windows 10 to extend system partition if the unallocated space is right behind it. Otherwise, you might need a third-party Windows 10 partition tool to help you do the job. EaseUS partition software is a reliable one. It could be much easier to move unallocated disk space to C drive in all Windows OS with the help of this program. 

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 Windows 10 is supported

Step 1: Launch EaseUS Partition Master

Run EaseUS Partition Master

Step 2: Add space to the System C drive

1. Shrink partition and leave unallocated space for extending C: drive:

  1. Right-click on a partition next to the C: drive and select "Resize/Move".
  2. Drag either end of the partition to shrink and leave unallocated space behind the system C: drive and click "OK".

2. Right-click on the System C: drive and select "Resize/Move".

Extend System partition

To add space to the C: drive, drag the system partition end into unallocated space.

Add space to C drive

Step 3: Confirm to extend system C drive

Click the "Execute Operation" button, check all the operations waiting for pending, and click "Apply" to keep all changes so to extend C drive.

Confirm to extend system C drive