How to Add Unallocated Space into a Partition on Windows 8 without Data Loss?

Question: My Windows 8 comes with a hard drive which was partitioned into C and D drives. Besides, there is an unallocated partition at the end of this disk. Is there any way to add the unallocated space to partition?

Answer: Both Windows 8 Disk Management and free magic partition software can help you add unallocated space to partition without data loss.

What is "unallocated space" on a hard drive? Usually, it is just sitting there, waiting to be used. Unallocated Space is available disk space that is not allocated to any partition. In general, there are two ways to use unallocated space. You can create a new partition with unallocated space or add unallocated space to a partition.

How to add unallocated space to partition with Windows 8 Disk Management?

Note: Windows 8 Disk Management only allows you to add unallocated space to the adjacent partition which is at the left side of unallocated space.

  1. Open Windows 8 Disk Management. Then, right click on the partition and select "Extend Volume".

  2. Extend Volume
  3. Follow the "Extend Volume Wizard" to add unallocated space to D partition for Windows 8.
  4. Can I add the unallocated space to C drive? No, you can not. Because the "Extend Volume" only works with contiguous unallocated space at the right side of the partition you want to extend. If you right click on C drive, the "Extend Volume" will be greyed out.

    Extend Volume Greyed out

Add non-contiguous unallocated space to C drive in Windows 8

As Partition Magic alternative, AOMEI Partition Assistant is easy to use yet comprehensive partition manager software for Windows 8. It provides a set of integrated features to address your diverse needs with a high degree of data protection.

Tip: Free download the full version of AOMEI Partition Assistant Standard (File Size: 3.66 MB).

Step1: Install and launch AOMEI Partition Assistant Standard Edition.

AOMEI Partition Assistant

Step2: Right click on C drive and select "Merge Partition".

Add Unallocated Space

In the pop-up window, choose C drive and unallocated space that you want to add in the partition layout.
Merge Unallocated Space to C Drive

Step3: Click "OK". You can preview the unallocated space has been added into C drive. To save the changes, please click "Apply" on the toolbar.
Click Apply

As ALL-IN-ONE partition manager and powerful disk management tool, AOMEI Partition Assistant also allows you to do the following operation in Windows 8:

Free download AOMEI Partition Assistant and try it out.

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