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Repair-Volume

Performs repairs on a volume.

Windows Server · Risk: Critical · Documentation Verified

Last verified: 2026-10-26

Microsoft Storage reference: Performs repairs on a volume. 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.

Repair-Volume [-DriveLetter] <Char[]> [-OfflineScanAndFix] [-SpotFix] [-Scan] [-CimSession <CimSession[]>]
 [-ThrottleLimit <Int32>] [-AsJob] [-WhatIf] [-Confirm] [<CommonParameters>]

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Required permissions

Use an account with the target resource permissions documented for Repair-Volume. 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.
-Confirm: Prompts you for confirmation before running the cmdlet.
-DriveLetter (required): Specifies a letter used to identify a drive or volume in the system.
-FileSystemLabel (required): Specifies the volume to scan based on the file system label (the volume name).
-InputObject (required): Specifies the input to this cmdlet. You can use this parameter, or you can pipe the input to this cmdlet.
-ObjectId (required): Specifies an ID representing the object. The ID is not globally unique.
-OfflineScanAndFix: Performs and offline scan and fix of any errors found in the file system.
-Path (required): Contains valid path information.
-Scan: Scans the volume.
-SpotFix: Takes the volume offline and fixes any issues that are logged in the $corrupt file.
-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.
-WhatIf: Shows what would happen if the cmdlet runs. The cmdlet is not run.

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

EXAMPLE 1

Repair-Volume -DriveLetter H -Scan

This example scans the volume H: and reports errors only. It uses the -DriveLetter switch to designate the volume by its drive letter and -Scan to indicate the scanning action. Source: Microsoft, CC BY 4.0; transcript prompt/output removed. This example was not executed.

Sources

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

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

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