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Merge-VHD

Updated: June 7, 2013

Applies To: Windows Server 2012

Merge-VHD

Merges virtual hard disks.

Syntax

Parameter Set: Default
Merge-VHD [-Path] <String> [[-DestinationPath] <String> ] [-AsJob] [-ComputerName <String[]> ] [-Force] [-Passthru] [ <CommonParameters>]




Detailed Description

The Merge-VHD cmdlet merges virtual hard disks in a differencing virtual hard disk chain. The merge is from a specified source child disk to a specified destination child disk.

Merge is an offline operation; the virtual hard disk chain must not be attached when merge is initiated.

Parameters

-AsJob

Run the cmdlet as a background job.


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-ComputerName<String[]>

Specifies one or more Hyper-V hosts on which virtual hard disks are to be merged. NetBIOS names, IP addresses, and fully-qualified domain names are allowable. The default is the local computer — use “localhost” or a dot (“.”) to specify the local computer explicitly.


Aliases

none

Required?

false

Position?

named

Default Value

.

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-DestinationPath<String>

Specifies the path to the child in the virtual hard disk chain that is the destination for the merge command.


Aliases

none

Required?

false

Position?

2

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

true

-Force

Runs the cmdlet without prompting for confirmation.


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Passthru

Specifies that an object is to be passed through to the pipeline representing the merged virtual hard disk.


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Path<String>

Specifies the path to the child in the virtual hard disk chain that is the source for the merge command. If a filename or relative path is specified, the virtual hard disk path will be calculated relative to the current working directory.


Aliases

none

Required?

true

Position?

1

Default Value

none

Accept Pipeline Input?

true (ByValue, ByPropertyName)

Accept Wildcard Characters?

true

<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.

  • VHDObject

Outputs

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

Examples

Example 1

This example merges the virtual hard disk from Child4 to Child2, for a virtual disk chain with Child4 as a child of Child3, Child3 as a child of Child2, Child2 as a child of Child1, and Child1 as a child of Parent, and with the virtual hard disk file for each located in c:\test. This example merges all data from Child4 and Child3 up to Child2. Child4.vhdx and Child3.vhdx are not deleted, but are no longer valid virtual hard disk files after the operation.


PS C:\> Merge-VHD –Path c:\test\Child4.vhdx –DestinationPath c:\test\Child2.vhdx

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