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Merge-VHD

Module:
Hyper-V Module

Merges virtual hard disks.

Syntax

Default (Default) 

Merge-VHD
    [-Path] <String>
    [[-DestinationPath] <String>]
    [-Force]
    [-AsJob]
    [-Passthru]
    [-CimSession <CimSession[]>]
    [-ComputerName <String[]>]
    [-Credential <PSCredential[]>]
    [-WhatIf]
    [-Confirm]
    [<CommonParameters>]

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.

Examples

Example 1

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

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 Child4.vhdx and Child3.vhdx are not deleted, but are no longer valid virtual hard disk files after the operation.

Parameters

-AsJob

Runs the cmdlet as a background job.

Parameter properties

Type:SwitchParameter
Default value:None
Supports wildcards:False
DontShow:False

Parameter sets

(All)
Position:Named
Mandatory:False
Value from pipeline:False
Value from pipeline by property name:False
Value from remaining arguments: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.

Parameter properties

Type:

CimSession[]

Default value:None
Supports wildcards:False
DontShow:False

Parameter sets

(All)
Position:Named
Mandatory:False
Value from pipeline:False
Value from pipeline by property name:False
Value from remaining arguments:False

-ComputerName

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.

Parameter properties

Type:

String[]

Default value:None
Supports wildcards:False
DontShow:False

Parameter sets

(All)
Position:Named
Mandatory:False
Value from pipeline:False
Value from pipeline by property name:False
Value from remaining arguments:False

-Confirm

Prompts you for confirmation before running the cmdlet.

Parameter properties

Type:SwitchParameter
Default value:False
Supports wildcards:False
DontShow:False
Aliases:cf

Parameter sets

(All)
Position:Named
Mandatory:False
Value from pipeline:False
Value from pipeline by property name:False
Value from remaining arguments:False

-Credential

Specifies one or more user accounts that have permission to perform this action. The default is the current user.

Parameter properties

Type:

PSCredential[]

Default value:None
Supports wildcards:False
DontShow:False

Parameter sets

(All)
Position:Named
Mandatory:False
Value from pipeline:False
Value from pipeline by property name:False
Value from remaining arguments:False

-DestinationPath

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

Parameter properties

Type:String
Default value:None
Supports wildcards:False
DontShow:False

Parameter sets

(All)
Position:1
Mandatory:False
Value from pipeline:False
Value from pipeline by property name:False
Value from remaining arguments:False

-Force

Runs the cmdlet without prompting for confirmation.

Parameter properties

Type:SwitchParameter
Default value:None
Supports wildcards:False
DontShow:False

Parameter sets

(All)
Position:Named
Mandatory:False
Value from pipeline:False
Value from pipeline by property name:False
Value from remaining arguments:False

-Passthru

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

Parameter properties

Type:SwitchParameter
Default value:None
Supports wildcards:False
DontShow:False

Parameter sets

(All)
Position:Named
Mandatory:False
Value from pipeline:False
Value from pipeline by property name:False
Value from remaining arguments:False

-Path

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.

Parameter properties

Type:String
Default value:None
Supports wildcards:False
DontShow:False
Aliases:FullName

Parameter sets

(All)
Position:0
Mandatory:True
Value from pipeline:True
Value from pipeline by property name:True
Value from remaining arguments:False

-WhatIf

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

Parameter properties

Type:SwitchParameter
Default value:False
Supports wildcards:False
DontShow:False
Aliases:wi

Parameter sets

(All)
Position:Named
Mandatory:False
Value from pipeline:False
Value from pipeline by property name:False
Value from remaining arguments:False

CommonParameters

This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutBuffer, -OutVariable, -PipelineVariable, -ProgressAction, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.

Inputs

VHDObject

Outputs

Microsoft.Vhd.PowerShell.VirtualHardDisk