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Convert-VHD

Module:
Hyper-V Module

Converts the format, version type, and block size of a virtual hard disk file.

Syntax

Default (Default) 

Convert-VHD
    [-Path] <String>
    [-DestinationPath] <String>
    [-VHDType <VhdType>]
    [-ParentPath <String>]
    [-BlockSizeBytes <UInt32>]
    [-DeleteSource]
    [-AsJob]
    [-Passthru]
    [-CimSession <CimSession[]>]
    [-ComputerName <String[]>]
    [-Credential <PSCredential[]>]
    [-WhatIf]
    [-Confirm]
    [<CommonParameters>]

Description

The Convert-VHD cmdlet converts a virtual hard disk file by copying the data from a source virtual hard disk file to a new virtual hard disk file of a specified format and version type. The format is determined by the file name extension of the specified files, either .vhdx or .vhd. Conversion is an offline operation; the virtual hard disk must not be attached when the operation is started.

Examples

Example 1

PS C:\> Convert-VHD -Path c:\test\testvhd.vhd -DestinationPath c:\test\testvhdx.vhdx

This example converts a source VHD to a destination VHDX. Because the format is determined by the file name extension and the default type is determined by the source virtual hard disk when no type is specified, the destination virtual hard disk will be a VHDX-format disk of the same type as the source virtual hard disk.

Example 2

PS C:\> Convert-VHD -Path c:\test\child1vhdx.vhdx -DestinationPath c:\test\child1vhd.vhd -VHDType Differencing -ParentPath c:\test\parentvhd.vhd

This example converts a source differencing disk of VHDX format to a destination differencing disk of VHD format that is connected to an existing parent disk.

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

-BlockSizeBytes

Specifies the block size, in bytes, of the virtual hard disk after conversion.

Parameter properties

Type:UInt32
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 the virtual hard disk is to be converted. 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

-DeleteSource

Specifies that the source virtual hard disk is to be deleted after the conversion.

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

-DestinationPath

Specifies the path to the converted virtual hard disk file.

Parameter properties

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

Parameter sets

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

-ParentPath

Specifies the parent path for the destination-differencing virtual hard disk file.

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

-Passthru

Specifies that an object is to be passed through to the pipeline representing the converted 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 virtual hard disk file to be converted. If a file name or relative path is specified, the path of the converted hard disk path is 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

-VHDType

Specifies the type of the converted virtual hard disk. Allowed values are Fixed, Dynamic, and Differencing. The default is determined by the type of source virtual hard disk.

Parameter properties

Type:VhdType
Default value:None
Accepted values:Unknown, Fixed, Dynamic, Differencing
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

-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.

Outputs

Microsoft.Vhd.PowerShell.VirtualHardDisk