Windows 10 Disk Management - A Built-in Tool for Disk Partition Management
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Windows 10 is the latest Operating System (OS) released by Microsoft. It improves much compared with Windows 8 such as adding the Start Menu seen in Windows 7, a virtual desktop system, a voice assistant named Cortana, Xbox app and streaming, and Edge browser.

Disk Management is a built-in tool in Windows 10 which is widely known by PC users. It is able to help you manage hard disk partitions without rebooting system and any interruption. It is a convenient tool for Windows 10 users. The features of Windows 10 Disk Management are as follows:

  • Create, delete and format partition.
  • Change drive letter and paths.
  • Mark partition as active.
  • Explore partition to view files.
  • Extend and shrink partition.
  • Add mirror.
  • Convert empty MBR to GPT disk, and vice versa.
  • Convert empty dynamic disk to basic disk.
  • More about partition hard drive Windows 10.

Maybe most of Windows 10 desktop and laptop users have come across the problem of low disk space, especially for system partition. With Disk Management tool, you can reduce the influence of low disk space in some ways. To use this tool, you should open it at first, so we introduce 3 ways for you to launch Disk Management.

  • Way 1: The easiest way of launching Disk Management in Windows 10 is from Desktop. Right click on Start Menu (or press Windows+X hotkey) and then select "Disk Management".
  • Open Disk Management Windows 10
  • Way 2: Use Windows+R hotkey to open Run window. Then type "Diskmgmt.msc" and click "OK" or hit "Enter" key.
  • Open Disk Management from Run
  • Way 3: Directly type "disk management" in the Search box and choose "Create and format hard disk partitions" from the results.
  • Search Disk Management

After you open Disk Management, right click the partition you would like to expand and then choose Extend Volume (e.g. C partition).

Windows 10 Disk Management Extend Volume

When you use Windows 10 Disk Management to extend a partition, sometimes you may find the Extend Volume button is grayed.

Extend Volume Grayed Out Windows 10 Disk Management

Is there something wrong with this tool? No, the reason is that the function of Extend Volume in Windows 10 is only available when there is contiguous unallocated space behind the partition you would like to extend. What can you do when you don't have unallocated space on hard drive?

Fortunately, the third-party disk partition software - AOMEI Partition Assistant Professional allows you to extend partition whether or not there is unallocated space next to the partition you plan to extend. What's more, you can even enlarge partition without unallocated space on hard drive. The following will show you 2 methods to extend partition with Partition Assistant.

Method 1: Extend partition when there is non-contiguous unallocated space

Before you do:

  • You can merge one or more parts of unallocated space into a partition.
  • "System Reserved" partition could not be merged.
  • If there is running applications in the partition you are going to operate, AOMEI Partition Assistant will suggest you to close them or perform the operation under PreOS Mode.
  • If there is no unallocated space on the disk, please go to Method 2.

Step1: Download AOMEI Partition Assistant Professional, install and launch it. Right click on the partition you need to extend (e.g. C Drive) and choose Merge Partitions.

Merge Partitions

Step2: Tick the checkbox before the unallocated space and then click OK.

Choose Unallocated Space

Step3: Now you can preview the unallocated space has been added into C drive. To save the change, please click Apply button at the top left corner.

Click Apply

Method 2: Extend partition when there is no unallocated space

Before you do:

  • If there are four primary partitions on a MBR disk, and you want to split one of them, the partition that is being split will be converted to logical partition automatically.
  • If one disk has four primary partitions, the program would not allow you to split the system partition or boot partition, unless you could convert one of other partitions from primary to logical partition, and then the program will allow you to split system partition. The new generated partition will be automatically set as logical partition.

Step1:Open this software, right click a partition which has enough space (here is D partition) and then choose Allocate Free Space.

Allocate Free Space

Step2: Enter the size of free space you would like to add into another partition (here is C drive), and then click OK.

Enter Free Space Size

Step3: Now you can preview some free space has been allocated to C drive from D partition. Click Apply to save the changes. Then you will extend partition C.

Click Apply
FeaturesAOMEI Partition Assistant ProWindows 10 Disk Management
Create partition, delete partition, format partition, change drive letter
Extend/Shrink NTFS partition
Extend/Shrink FAT32 partition
Merge partitions, merge unallocated space, move partition
Allocate free space from one partition to another
Convert MBR to GPT disk, convert GPT to MBR disk without data loss
Convert dyanmic disk to basic disk without data loss
Convert primary to logical partition, convert logical to primary partition
Convert NTFS to FAT32 without formatting
Migrate OS to SSD or HDD
Make Windows PE bootable disc
Partition recovery
Copy disk, copy partition
Change serial number, change partition type ID
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$32.4 ($36)
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From the table, you can see AOMEI Partition Assistant Pro is more powerful than Window 10 Disk Management. Besides, it is more freely for you to any operation without losing any data. Therefore, as a user who requires many advanced features, AOMEI Partition Assistant Pro is a good choice.

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