Convert-VHD
Converts the format, version type, and block size of a virtual hard disk file.
Syntax
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.vhdxThis 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.vhdThis 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.
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-BlockSizeBytes
Specifies the block size, in bytes, of the virtual hard disk after conversion.
| Type: | UInt32 |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | 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.
| Type: | CimSession[] |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | 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.
| Type: | String[] |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-Confirm
Prompts you for confirmation before running the cmdlet.
| Type: | SwitchParameter |
| Aliases: | cf |
| Position: | Named |
| Default value: | False |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-Credential
Specifies one or more user accounts that have permission to perform this action. The default is the current user.
| Type: | PSCredential[] |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-DeleteSource
Specifies that the source virtual hard disk is to be deleted after the conversion.
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-DestinationPath
Specifies the path to the converted virtual hard disk file.
| Type: | String |
| Position: | 1 |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-ParentPath
Specifies the parent path for the destination-differencing virtual hard disk file.
| Type: | String |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-Passthru
Specifies that an object is to be passed through to the pipeline representing the converted virtual hard disk.
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | 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
| Type: | String |
| Aliases: | FullName |
| Position: | 0 |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | True |
| Accept wildcard characters: | 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.
| Type: | VhdType |
| Accepted values: | Unknown, Fixed, Dynamic, Differencing |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-WhatIf
Shows what would happen if the cmdlet runs. The cmdlet is not run.
| Type: | SwitchParameter |
| Aliases: | wi |
| Position: | Named |
| Default value: | False |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
Outputs
Microsoft.Vhd.PowerShell.VirtualHardDisk