Using an existing Virtual Hard Disk when creating a virtual machine

When you create a new Virtual Machine in Hyper-V Manager, the New Virtual Machine Wizard includes a Connect Virtual Hard Disk page. This page contains the following content：

Create A Virtual Hard Disk: You can specify the name，location，and size for a new Virtual Hard Disk. But this option can only create a dynamically expanding VHDX format virtual Hard disk.

Use An Existing Virtual Hard Disk: Enable you to specify an existing Virtual Hard Disk as the Virtual Machine's system disk.

Attach A Virtual Hard Disk Later: Skip this step now and add an existing virtual Hard Disk later。

Select use an existing virtual hard disk, and specify the location of the virtual disk in the location text box.