Microsoft DOS diskpart command

Updated: 05/21/2018 by Computer Hope

About diskpart

The diskpart command is a recovery console command that enables a user to delete and create partitions on their computer.


The diskpart command is a recovery console and external command that is available in the below Microsoft operating systems.

Diskpart syntax

Windows Vista, 7, 8, 10 diskpart command syntax

Microsoft DiskPart version 6.1.7601
Copyright (C) 1999-2008 Microsoft Corporation.

Microsoft DiskPart syntax:
diskpart [/s <script>] [/?]

/s <script> Use a DiskPart script.
/? Show this help screen.

Typing diskpart from an elevated command prompt will enter the "DISKPART>" prompt. From this prompt, the following commands are available. These commands are also available from a DiskPart script.

ACTIVE Mark the selected partition as active.
ADD Add a mirror to a simple volume.
ASSIGN Assign a drive letter or mount point to the selected volume.
ATTRIBUTES Manipulate volume or disk attributes.
ATTACH Attaches a virtual disk file.
AUTOMOUNT Enable and disable automatic mounting of basic volumes.
BREAK Break a mirror set.
CLEAN Clear the configuration information, or all information, off the disk.
COMPACT Attempts to reduce the physical size of the file.
CONVERT Convert between different disk formats.
CREATE Create a volume, partition, or virtual disk.
DELETE Delete an object.
DETAIL Provide details about an object.
DETACH Detaches a virtual disk file.
EXIT Exit DiskPart.
EXTEND Extend a volume.
EXPAND Expands the maximum size available on a virtual disk.
FILESYSTEMS Display current and supported file systems on the volume.
FORMAT Format the volume or partition.
GPT Assign attributes to the selected GPT partition.
HELP Display a list of commands.
IMPORT Import a disk group.
INACTIVE Mark the selected partition as inactive.
LIST Display a list of objects.
MERGE Merges a child disk with its parents.
ONLINE Online an object that is currently marked as offline.
OFFLINE Offline an object that is currently marked as online.
RECOVER Refreshes the state of all disks in the selected pack. Attempts recovery on disks in the invalid pack, and resynchronizes mirrored volumes and RAID5 volumes that have stale plex or parity data.
REM Does nothing and is used to comment scripts.
REMOVE Remove a drive letter or mount point assignment.
REPAIR Repair a RAID-5 volume with a failed member.
RESCAN Rescan the computer looking for disks and volumes.
RETAIN Place a retained partition under a simple volume.
SAN Display or set the SAN policy for the currently booted OS.
SELECT Shift the focus to an object.
SETID Change the partition type.
SHRINK Reduce the size of the selected volume.
UNIQUEID Displays or sets the GUID partition table (GPT) identifier or master boot record (MBR) signature of a disk.

Recovery Console diskpart command syntax

Creates and deletes partitions on a hard drive. The below diskpart command information is only available when you are using the Recovery Console.

diskpart [/add | /delete] [device_name | drive_name | partition_name] [size]

/add Creates a new partition.
/delete Deletes an existing partition.
device_name The device you want to create or delete a partition. The name can be obtained from the output of the map command.
drive_name The partition you want to delete, by drive letter. Used only with /delete.
partition_name The partition you want to delete, by partition name. Can be used in place of the drive_name. Used only with /delete.
size The size, in megabytes (MB), of the partition you want to create. Used only with /add.

Diskpart examples


Typing diskpart without any additional switches or options opens a new DISKPART> prompt and allows all the above commands to be entered. For example, while at the DISKPART> prompt, you can type LIST DISK and get an output similar to the example below.

  Disk ###  Status         Size     Free     Dyn  Gpt
  --------  -------------  -------  -------  ---  ---
  Disk 0    Online          476 GB   449 MB
  Disk 1    Online         2047 GB      0 B
  Disk 2    No Media           0 B      0 B
  Disk 3    No Media           0 B      0 B
  Disk 4    No Media           0 B      0 B
  Disk 5    No Media           0 B      0 B

Note: When entering the diskpart command in some versions of Windows, you may receive a UAC warning. You must accept this warning before diskpart can open.

Tip: To exit the DISKPART> prompt, type exit and press Enter.

diskpart /delete D:

In the above example, the D: partition would be deleted.

diskpart /add \Device\HardDisk0 20

In the above example, a 20 MB partition would be created on the HardDisk0 device.

Tip: The drive name is obtained from the map command.