How to Move Unallocated Space to C Drive in Windows 10/8/7 (3 ways)?

October 14, 2016

Sometimes, you need to extend system partition with unallocated space on hard drive. This article will show you three different ways to move unallocated space to C drive in Windows 10/8/7.

You need to move unallocated space to C drive

Since Microsoft released Windows 10, many users try to upgrade their Windows 7 or Windows 8 to Windows 10 to get a new experience. However, when you upgrade your system to Windows 10, you may find that the hard drive partitions are unreasonable. For example, the C drive is running out of space, while a certain space is unallocated. In such condition, move unallocated space to C drive Windows 10 would help a lot for extending system drive .  

Move unallocated space to C drive with three ways

To move unallocated space to C drive in Windows 10/8/7, here provides you three methods.

Method 1: using Windows Disk Management

Windows 10 keeps Windows Disk Management tool, and you can use it to add unallocated space to C drive. Open Disk Management by pressing Windows + R simultaneously, input diskmgmt.msc and clicking Ok.Then, right click C drive, select Extend Volume to extend C drive with unallocated space.

Extend Volume

However, Disk Management has many limitations. For example, you cannot move unallocated space to C drive if the unallocated space is not adjacent to the C drive, or the adjacent unallocated space is not at its right side.

Extend Volume Grayed out

Fortunately, there are two other methods for you to move unallocated space to C drive more flexibly.

Method 2: Move Partition tool in AOMEI Partition Assistant

The good news is that there are some third party tools for you to manage your hard drive. For example, the AOMEI Partition Assistant Professional is a remarkable partition manager that can help you move unallocated space to C drive in Windows 10/8/7. Here are detailed steps:

1. Install and launch AOMEI Partition Assistant. You can see that the unallocated space is not adjacent to your C drive. But you can use this software to move unallocated space to C drive in Windows 10/8/7. Right click D drive, select Move Partition in the pop out menu.

Move Partition

2. It will pop out a window that you can use to move the unallocated space to C drive. Drag the D drive toward to the right side, click OK.

Move D Partition to Right Side

3.Then, you will find that the unallocated space is adjacent to C drive. Here, you can right click C drive, select Resize Partition to add the unallocated space to your system partition.

Resize Partition

4. Here will pop out a window that you can move unallocated space to C drive by dragging the bar to the right side. Click OK to back to the main interface.

Specify C Drive Location

5. Finally, click Apply at the tool bar to submit all operations.

Apply Move and Resize Partition

Note: If the unallocated space is at the left side of C drive, you can use the Resize Partition to add unallocated space to C drive directly.

Method 3. Merge unallocated space to C drive with AOMEI Partition Assistant

If you think the Method 2 is a little bit complex, here we’ll introduce you a simpler way that you can move unallocated space to C drive Windows 10/8/7 directly.

1. Launch AOMEI Partition Assistant. Right click C drive and select Merge Partitions at the pop out menu.

Merge Partitions

2. It will pop out a window that you can merge C drive with unallocated space directly no matter where the unallocated space located. Tick the box of the partitions you want to merge, and click OK.

Add Unallocated Space to C Drive

3. Back to the main interface, you can see that you have already moved unallocated space to C drive. Do not forget to click Apply at the tool bar to execute it.  

Apply Merge Partitions

AOMEI Partition Assistant Professional should be your great choice to move unallocated space to C drive in Windows 10/8/7. It is an amazing hard drive partition manager. If your system partition is running out of space, and there is no unallocated space on your hard drive, you can use Allocate Free Space function to re-partition your hard drive.  Besides, it owns various other useful functions such as migrating OS to SSD without reinstallation, converting dynamic disk into basic without data loss and so on.