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Dismount-DiskImage

Windows Server 2012 R2 and Windows 8.1

Updated: June 4, 2014

Applies To: Windows 8.1, Windows PowerShell 4.0, Windows Server 2012 R2

Dismount-DiskImage

Dismounts a disk image (virtual hard disk or ISO) so that it can no longer be accessed as a disk.

Syntax

Parameter Set: ByImagePath
Dismount-DiskImage [-ImagePath] <String[]> [-AsJob] [-CimSession <CimSession[]> ] [-PassThru] [-StorageType <StorageType> ] [-ThrottleLimit <Int32> ] [-Confirm] [-WhatIf] [ <CommonParameters>]

Parameter Set: ByDevicePath
Dismount-DiskImage -DevicePath <String[]> [-AsJob] [-CimSession <CimSession[]> ] [-PassThru] [-StorageType <StorageType> ] [-ThrottleLimit <Int32> ] [-Confirm] [-WhatIf] [ <CommonParameters>]

Parameter Set: InputObject (cdxml)
Dismount-DiskImage -InputObject <CimInstance[]> [-AsJob] [-CimSession <CimSession[]> ] [-PassThru] [-ThrottleLimit <Int32> ] [-Confirm] [-WhatIf] [ <CommonParameters>]




Detailed Description

The Dismount-DiskImage cmdlet dismounts a disk image (virtual hard disk or ISO) so that it can no longer be accessed as a disk. This cmdlet requires either the full image path of the ISO or VHD file, or the device path.

To eject a VHD file, administrator privilege is required. Administrator privilege is not needed to eject an ISO file on Windows® 8. On Windows Server® 2012, only an administrator is allowed to mount or eject ISO file.

Parameters

-AsJob

Runs the cmdlet as a background job. Use this parameter to run commands that take a long time to complete. The cmdlet immediately returns an object that represents the job and then displays the command prompt. You can continue to work in the session while the job completes. To manage the job, use the *-Job cmdlets. To get the job results, use the Receive-Job cmdlet. For more information about Windows PowerShell® background jobs, see about_Jobs.


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-CimSession<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.


Aliases

Session

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-DevicePath<String[]>

Specifies the device path of the ISO/VHD file. You cannot use this parameter with the ImagePath parameter.


Aliases

none

Required?

true

Position?

named

Default Value

none

Accept Pipeline Input?

True (ByPropertyName)

Accept Wildcard Characters?

false

-ImagePath<String[]>

Specifies the path of the ISO or VHD file. You cannot use this parameter with the DevicePath parameter.


Aliases

none

Required?

true

Position?

1

Default Value

none

Accept Pipeline Input?

True (ByValue, ByPropertyName)

Accept Wildcard Characters?

false

-InputObject<CimInstance[]>

Accepts an object from the pipeline as input. This object is a DiskImage CIM object that is exposed by Get-DiskImage cmdlet, which is different from the VirtualHardDisk object output by the New-VHD cmdlet in the Hyper-V module.


Aliases

none

Required?

true

Position?

named

Default Value

none

Accept Pipeline Input?

True (ByValue)

Accept Wildcard Characters?

false

-PassThru

Specifies that the cmdlet should output an object representing the dismounted disk image. By default, this cmdlet does not generate any output.


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-StorageType<StorageType>

Specifies the storage type of a file: ISO, VHD, VHDx, or Unknown. If the StorageType parameter is not specified or the Unknown type is provided, the storage type is determined by file extension.


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

True (ByPropertyName)

Accept Wildcard Characters?

false

-ThrottleLimit<Int32>

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.


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Confirm

Prompts you for confirmation before running the cmdlet.


Required?

false

Position?

named

Default Value

false

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-WhatIf

Shows what would happen if the cmdlet runs. The cmdlet is not run.


Required?

false

Position?

named

Default Value

false

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

<CommonParameters>

This cmdlet supports the common parameters: -Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutBuffer, and -OutVariable. For more information, see    about_CommonParameters.

Inputs

The input type is the type of the objects that you can pipe to the cmdlet.

Outputs

The output type is the type of the objects that the cmdlet emits.

Notes

  • The Microsoft.Management.Infrastructure.CimInstance object is a wrapper class that displays Windows Management Instrumentation (WMI) objects. The path after the pound sign (#) provides the namespace and class name for the underlying WMI object.

Examples

Example 1: Dismount a disk image by path

This example ejects an ISO named My US Visit Fall 2010 Pictures by specifying the image path at E:\ISO-Files.


PS C:\> Dismount-DiskImage -ImagePath "E:\ISO-Files\My US Visit Fall 2010 Pictures.iso"

Example 2: Dismount a disk image by device path

This example ejects an ISO by specifying device path for cdrom1. Refer to the Get-DiskImage cmdlet to learn how to find the device path of an ISO or VHD file.


PS C:\> Dismount-DiskImage -DevicePath \\.\CDROM1

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