New-Partition

Creates a new partition on an existing Disk object.

Syntax

New-Partition
   [-DiskNumber] <UInt32[]>
   [-Size <UInt64>]
   [-UseMaximumSize]
   [-Offset <UInt64>]
   [-Alignment <UInt32>]
   [-DriveLetter <Char>]
   [-AssignDriveLetter]
   [-MbrType <MbrType>]
   [-GptType <String>]
   [-IsHidden]
   [-IsActive]
   [-CimSession <CimSession[]>]
   [-ThrottleLimit <Int32>]
   [-AsJob]
   [<CommonParameters>]
New-Partition
   -DiskId <String[]>
   [-Size <UInt64>]
   [-UseMaximumSize]
   [-Offset <UInt64>]
   [-Alignment <UInt32>]
   [-DriveLetter <Char>]
   [-AssignDriveLetter]
   [-MbrType <MbrType>]
   [-GptType <String>]
   [-IsHidden]
   [-IsActive]
   [-CimSession <CimSession[]>]
   [-ThrottleLimit <Int32>]
   [-AsJob]
   [<CommonParameters>]
New-Partition
   -DiskPath <String[]>
   [-Size <UInt64>]
   [-UseMaximumSize]
   [-Offset <UInt64>]
   [-Alignment <UInt32>]
   [-DriveLetter <Char>]
   [-AssignDriveLetter]
   [-MbrType <MbrType>]
   [-GptType <String>]
   [-IsHidden]
   [-IsActive]
   [-CimSession <CimSession[]>]
   [-ThrottleLimit <Int32>]
   [-AsJob]
   [<CommonParameters>]
New-Partition
   -InputObject <CimInstance[]>
   [-Size <UInt64>]
   [-UseMaximumSize]
   [-Offset <UInt64>]
   [-Alignment <UInt32>]
   [-DriveLetter <Char>]
   [-AssignDriveLetter]
   [-MbrType <MbrType>]
   [-GptType <String>]
   [-IsHidden]
   [-IsActive]
   [-CimSession <CimSession[]>]
   [-ThrottleLimit <Int32>]
   [-AsJob]
   [<CommonParameters>]

Description

The New-Partition cmdlet creates a partition on a specified Disk object. Note: This cmdlet does not support creating dynamic volumes.

Examples

Example 1: Create a new partition on disk 1

PS C:\> New-Partition -DiskNumber 1 -UseMaximumSize -AssignDriveLetter

This example creates a new partition on disk 1, using the maximum available space, and automatically assigning a drive letter.

Example 2: Get all RAW disks, initialize the disks, partition, and format them

This line gets all disk objects and then pipes the objects to the next command.
PS C:\>Get-Disk |

This line selects only objects where the PartitionStyle property value equals "RAW", and then pipes the objects to the next command.
PS C:\>Where-Object PartitionStyle -Eq "RAW" |

This line initializes all Disk objects in the pipeline and then pipes the objects to the next cmdlet.
PS C:\>Initialize-Disk -PassThru |

This line creates a maximum sized partition on each initialized Disk object, assigns a drive letter to the partitions, and then pipes the objects to the next cmdlet.
PS C:\>New-Partition -AssignDriveLetter -UseMaximumSize |

This line formats all newly partitioned disks.
PS C:\>Format-Volume

This example uses five cmdlets and the pipeline to get all disks, filter them for only RAW, unpartitioned disks, initialize the disks, partition the disks, and then format them.

Required Parameters

-DiskId

Specifies the ID of the disk on which to create the partition.

Type:String[]
Aliases:Id
Position:Named
Default value:None
Accept pipeline input:True (ByPropertyName)
Accept wildcard characters:False
-DiskNumber

Specifies an array of disk numbers.

Type:UInt32[]
Position:0
Default value:None
Accept pipeline input:True (ByPropertyName)
Accept wildcard characters:False
-DiskPath

Specifies the path of the disk on which to create the partition.

Type:String[]
Position:Named
Default value:None
Accept pipeline input:True (ByPropertyName)
Accept wildcard characters:False
-InputObject

Specifies the input object that is used in a pipeline command.

Type:CimInstance[]
Position:Named
Default value:None
Accept pipeline input:True (ByValue)
Accept wildcard characters:False

Optional Parameters

-Alignment

Specifies the alignment boundary in bytes.

Type:UInt32
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-AsJob

Runs the cmdlet as a background job. Use this parameter to run commands that take a long time to complete.

Type:SwitchParameter
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-AssignDriveLetter

Assigns a drive letter to the new partition.

Type:SwitchParameter
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-CimSession

Runs the cmdlet in a remote session or on a remote computer. Enter a computer name or a session object, such as the output of a New-CimSession or Get-CimSession cmdlet. The default is the current session on the local computer.

Type:CimSession[]
Aliases:Session
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-DriveLetter

Specifies the specific drive letter to assign to the new partition.

Type:Char
Aliases:NewDriveLetter
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-GptType

Specifies the type of GPT partition to create (by GUID). By default, the New-Partition cmdlet creates a basic GPT data partition.

The GUIDs of valid types are:

-- System Partition (c12a7328-f81f-11d2-ba4b-00a0c93ec93b)

-- Microsoft Reserved (e3c9e316-0b5c-4db8-817d-f92df00215ae)

-- Basic data (ebd0a0a2-b9e5-4433-87c0-68b6b72699c7)

-- Microsoft Recovery (de94bba4-06d1-4d40-a16a-bfd50179d6ac)

Type:String
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-IsActive

Specifies that the object is marked active.

Type:SwitchParameter
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-IsHidden

Creates a hidden partition.

Type:SwitchParameter
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-MbrType

Specifies the type of MBR partition to create. Valid types are: Extended, FAT12, FAT16, FAT32, Huge, and IFS.

Type:MbrType
Parameter Sets:FAT12, FAT16, Extended, Huge, IFS, FAT32
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-Offset

Specifies the starting offset, in bytes.

Type:UInt64
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-Size

Specifies the size of the partition to create. If not specified, then the units will default to Bytes. The acceptable value for this parameter is a positive number followed by the one of the following unit values: Bytes, KB, MB, GB, or TB.

Type:UInt64
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-ThrottleLimit

Specifies the maximum number of concurrent operations that can be established to run the cmdlet. If this parameter is omitted or a value of 0 is entered, then Windows PowerShell® calculates an optimum throttle limit for the cmdlet based on the number of CIM cmdlets that are running on the computer. The throttle limit applies only to the current cmdlet, not to the session or to the computer.

Type:Int32
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
-UseMaximumSize

Creates the largest possible partition on the specified disk.

Type:SwitchParameter
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False

Inputs

Microsoft.Management.Infrastructure.CimInstance#ROOT/Microsoft/Windows/Storage/MSFT_Disk

You can pipe a Disk object to the InputObject parameter.

Outputs

Microsoft.Management.Infrastructure.CimInstance#ROOT/Microsoft/Windows/Storage/MSFT_Partition

This cmdlet outputs an object that represents the newly created partition.