compact vdisk

• Applies to:

  ✅ Windows Server 2025, ✅ Windows Server 2022, ✅ Windows Server 2019, ✅ Windows Server 2016, ✅ Windows 11, ✅ Windows 10, ✅ Azure Stack HCI, versions 23H2 and 22H2

Reduces the physical size of a dynamically expanding virtual hard disk (VHD) file. This parameter is useful because dynamically expanding VHDs increase in size as you add files, but they do not automatically reduce in size when you delete files.

Syntax

compact vdisk

Remarks

• A dynamically expanding VHD must be selected for this operation to succeed. Use the select vdisk command to select a VHD and shift the focus to it.

• You can only use compact dynamically expanding VHDs that are detached or attached as read-only.

Related links

• Command-Line Syntax Key

• attach vdisk command

• detail vdisk command

• Detach vdisk command

• expand vdisk command

• Merge vdisk command

• select vdisk command

• list command