Resize-VHD
Resizes a virtual hard disk.
Syntax
Size (Default)
Resize-VHD
[-Path] <String[]>
[-SizeBytes] <UInt64>
[-AsJob]
[-Passthru]
[-CimSession <CimSession[]>]
[-ComputerName <String[]>]
[-Credential <PSCredential[]>]
[-WhatIf]
[-Confirm]
[<CommonParameters>]
MinimumSize
Resize-VHD
[-Path] <String[]>
[-ToMinimumSize]
[-AsJob]
[-Passthru]
[-CimSession <CimSession[]>]
[-ComputerName <String[]>]
[-Credential <PSCredential[]>]
[-WhatIf]
[-Confirm]
[<CommonParameters>]
Description
The Resize-VHD cmdlet changes the maximum physical size of a virtual hard disk. It can expand both VHD and VHDX files but can shrink only VHDX files. The shrink operation fails if it would shrink the virtual disk to less than its minimum size (available through the VHDX object's MinimumSize property).
If the virtual disk file connects to a virtual machine's IDE chain, you cannot resize the virtual disk while the virtual machine is online. If the virtual disk file connects to a virtual machine's SCSI chain, you can resize the virtual disk while the virtual machine is online.
Note
Resize-VHD does not remove empty blocks from a dynamically-expanding virtual hard disk file. Use Optimize-VHD instead.
Examples
Example 1
PS C:\> Resize-VHD -Path c:\BaseVHD.vhd -SizeBytes 1099511627776
Expands the VHD to 1 terabyte if the previous size was less than 1 terabyte. If it was larger, the cmdlet will report an error because it cannot shrink a VHD.
Example 2
PS C:\> Resize-VHD -Path c:\BaseVHDX.vhdx -SizeBytes 20GB
Changes the VHDX's size to 20 gigabytes (21,474,836,480 bytes). If it was larger, the cmdlet will only succeed if it had a MinimumSize less than or equal to 20 gigabytes.
Example 3
PS C:\> Resize-VHD -Path c:\BaseVHDX.vhdx -ToMinimumSize
Shrinks the VHDX to its minimum possible size as indicated in its MinimumSize property.
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 a virtual hard disk is to be resized. 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 |
-Passthru
Specifies that an object representing the resized virtual hard disk is to be passed through to the pipeline.
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 that is to be resized.
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 |
-SizeBytes
Specifies the size to which the virtual hard disk is to be resized.
Parameter properties
| Type: | UInt64 |
| Default value: | None |
| Supports wildcards: | False |
| DontShow: | False |
Parameter sets
Size
| Position: | 1 |
| Mandatory: | True |
| Value from pipeline: | False |
| Value from pipeline by property name: | False |
| Value from remaining arguments: | False |
-ToMinimumSize
Specifies that the virtual hard disk is to be resized to its minimum possible size.
Parameter properties
| Type: | SwitchParameter |
| Default value: | None |
| Supports wildcards: | False |
| DontShow: | False |
Parameter sets
MinimumSize
| Position: | Named |
| Mandatory: | True |
| 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.