COMMAND EVERYTHING.

Set-Disk

Takes a Disk object or unique disk identifiers and a set of attributes, and updates the physical disk on the system.

Last verified: 2026-10-26

Microsoft Storage reference: Takes a Disk object or unique disk identifiers and a set of attributes, and updates the physical disk on the system. The syntax and selected example below are adapted from the pinned Windows Server 2025 reference. Module availability, target configuration and delegated permissions determine whether it can run in your environment. Documentation and parameter text: Microsoft, CC BY 4.0; formatting adapted by Cmdlet World. No execution testing is claimed.

Set-Disk [-Number] <UInt32> [-IsOffline <Boolean>] [-CimSession <CimSession[]>] [-ThrottleLimit <Int32>]
 [-AsJob] [<CommonParameters>]

Required permissions

Use an account with the target resource permissions documented for Set-Disk. Modifying administrative cmdlets may require elevation or delegated administration. This catalog does not assert that ordinary users can execute the command.

Supported environments

Windows / Storage · Windows Server 2025 documentation; feature/module prerequisites apply

Parameters

-AsJob

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

-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.

-Guid

Contains a globally unique ID (GUID).

-InputObject (required)

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

-IsOffline

Specifies that the disk is offline.

-IsReadOnly

Sets the disk to be read-only, or read-write (read-only = false). Note: If the disk is set to read-only, then the disk must be set to read-only = false before using this cmdlet to set the PartitionStyle parameter.

-Number (required)

Specifies a disk number on which the cmdlet acts.

-PartitionStyle

Specifies the type of the partition. The acceptable values for this parameter are: MBR or GPT. The disk must be initialized (such as using the Initialize-Disk cmdlet) and set to read-write (IsReadOnly $false) before this cmdlet will work. The disk must be set to read-only = false before this cmdlet will work.

-Path (required)

Contains the device instance path.

-Signature

Contains the signature of the disk.

-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.

-UniqueId (required)

Specifies an ID used to uniquely identify a Disk object in the system. The ID persists through restarts.

Prerequisites

Windows with the Storage module and the Windows feature or management tools that provide it. Confirm target connectivity and version compatibility using the linked Microsoft reference.

Security considerations

This cmdlet changes system state. Review every target and parameter in the official reference, test outside production, and prepare an appropriate backup or rollback. Do not execute the example automatically.

Examples

Set-Disk -Number 5 -IsOffline $False

Sources

https://github.com/MicrosoftDocs/windows-powershell-docs/blob/b7645dd8c687139b28e845119da30ec670526507/docset/winserver2025-ps/Storage/Set-Disk.md

https://learn.microsoft.com/powershell/module/storage/set-disk?view=windowsserver2025-ps

Explain or customize this command with AI

Related commands

Add-CauClusterRole

Add-ClusterCheckpoint

Get-FsrmAdrSetting

Clear-HgsServer