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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 -DriveLetter T

This example creates a new partition on disk 1 using the maximum available space and assigns a drive letter T.

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

PS C:\> Get-Disk | Where-Object PartitionStyle -Eq "RAW" | Initialize-Disk -PassThru | New-Partition -AssignDriveLetter -UseMaximumSize | 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 to format them.

Example 3: Create a new EFI partition on GPT disk 2

PS C:\> New-Partition -DiskNumber 2 -Size 500MB -GptType "{c12a7328-f81f-11d2-ba4b-00a0c93ec93b}"

This example creates a new EFI partition on disk 2 with a size of 500 MB.

Example 4: Create a Windows/system partition on MBR disk 0

PS C:\> New-Partition -DiskNumber 0 -Size 100GB -MbrType IFS -IsActive

This example creates a new Windows/system partition on MBR disk 0 with a size of 100 GB.

Parameters

-Alignment

Specifies the alignment boundary in bytes.

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

-AssignDriveLetter

Assigns a drive letter to the new partition.

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

-DiskId

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

Type:String[]
Aliases:Id
Position:Named
Default value:None
Required:True
Accept pipeline input:True
Accept wildcard characters:False

-DiskNumber

Specifies an array of disk numbers.

Type:UInt32[]
Position:0
Default value:None
Required:True
Accept pipeline input:True
Accept wildcard characters:False

-DiskPath

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

Type:String[]
Position:Named
Default value:None
Required:True
Accept pipeline input:True
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
Required:False
Accept pipeline input:False
Accept wildcard characters:False

-GptType

Specifies the type of GPT partition to create (by GUID). The format should be 32 digits separated by hyphens, enclosed in braces and quoted:

"{00000000-0000-0000-0000-000000000000}"

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:"{ebd0a0a2-b9e5-4433-87c0-68b6b72699c7}"
Required:False
Accept pipeline input:False
Accept wildcard characters:False

-InputObject

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

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

-IsActive

Marks the partition as active:

  • On a BIOS-based system, the active partition is the partition the system will boot to. This partition must be a primary partition.
  • On a Unified Extensible Firmware Interface (UEFI)-based system, this setting is not used. The system will always boot to the EFI System Partition (ESP). If Active is set for this partition type, it is ignored.
Type:SwitchParameter
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False

-IsHidden

Creates a hidden partition.

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

-MbrType

Specifies the type of MBR partition to create.

Type:MbrType
Accepted values:FAT12, FAT16, Extended, Huge, IFS, FAT32
Position:Named
Default value:Huge
Required:False
Accept pipeline input:False
Accept wildcard characters:False

-Offset

Specifies the starting offset, in bytes.

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

Inputs

CimInstance

You can pipe a Disk object to the InputObject parameter.

Outputs

CimInstance

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

Notes

  • You can use either -AssignDriveLetter parameter or -DriveLetter parameter, but not both at the same time, while creating a new partition.
  • When used in Failover Cluster, cmdlets from the Storage module operate on cluster level (all servers in the cluster).