Windows 8 Disk Management – Resize Windows 8 Hard Drive Partition Easily and Safely

Windows 8 Disk Management

The Microsoft operating system - Windows 8 or 8.1 owns a lot of advanced functions, such as, Metro-style touch-based interface, Windows store, and so on. However, compared to Windows 7, it makes no big breakthrough on Windows 8 Disk Management. It just has the features as follows.

Basic features:

  • Make a partition, delete, wipe partition, format hard drive
  • Remove drive letter, assign letter to a partition
  • Convert FAT32 to NTFS, etc.

Advanced features:

  • Extend Volume and Shrink Volume.
  • Convert between basic disk and dynamic disk.
  • Convert empty MBR to GPT disk, and vise versa.
  • Convert empty dynamic disk to basic disk.

It has a variety of means to access Windows 8 Disk Management. The original one is through Command Prompt.

Start "Run" by means of pressing "Windows Logo Key"+ [R], input "diskmgmt.msc" in the text box, and click "OK". (See from the screenshot below.)  The Disk Management in Windows 8 will start right away.

Or, you can right click This PC, select Management->Disk Management. Then, you can see the basic situation of your disks.

Disk Management

Windows 8 Disk Management has the functions Shrink Volume and Extend Volume. You can shrink or extend a partition by right clicking the target partition, and selecting "Shrink Volume" or "Extend Volume", then input the number of space you want to shrink or extend.

Extend Volume Normal

Note:  you can resize partition only when there is an unallocated space right behind the target partition, or it will be grayed out.

Extend Volume Grayed out

As you can see from above, Windows 8 Disk Management built-in does have some limitations. So in my opinion, a third-party software, AOMEI Partition Assistant, a disk manager which can help you solve this problem easily. It has a lot of functions about resizing partition, and it can work with both 32 bit and 64 bit versions of Windows 7/8/10.

FeaturesAOMEI Partition AssistantWindows 8 Disk Management
Create, delete, format partitions, change drive letter, set active
Extend/Shrink NTFS partition
Hide, label, check partitions
Extend/Shrink FAT partition
Merge partitions
Move partition
Allocate free space
Copy disk & partition
Convert FAT to NTFS
Convert primary to logical and vice versa
Wipe disk, partition, unallocated space
Resize dynamic disk

The picture above is the comparison between Windows 8 Disk Management. You can know more information at The picture below is a window of AOMEI Partition Assistant. You can accomplish any task simply.

Main Interface

AOMEI Partition Assistant is a great Windows 8 disk manager that possesses many good disk partition management features, such as Extend Partition Wizard, Partition Management, and it can work with both MBR and GPT disk. Now download the freeware and experience it in person.

Tips: AOMEI Partition Assistant is also fully compatible with Windows 8.1, Windows 10.