Resize-VHD
Resizes a virtual hard disk.
Syntax
Resize-VHD
[-Path] <String[]>
[-SizeBytes] <UInt64>
[-AsJob]
[-Passthru]
[-CimSession <CimSession[]>]
[-ComputerName <String[]>]
[-Credential <PSCredential[]>]
[-WhatIf]
[-Confirm]
[<CommonParameters>]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 1099511627776Expands 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 20GBChanges 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 -ToMinimumSizeShrinks the VHDX to its minimum possible size as indicated in its MinimumSize property.
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 |
-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 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.
| 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 |
-Passthru
Specifies that an object representing the resized virtual hard disk is to be passed through to the pipeline.
| 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 that is to be resized.
| Type: | String[] |
| Aliases: | FullName |
| Position: | 0 |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-SizeBytes
Specifies the size to which the virtual hard disk is to be resized.
| Type: | UInt64 |
| Position: | 1 |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-ToMinimumSize
Specifies that the virtual hard disk is to be resized to its minimum possible size.
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | True |
| 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