You can add an existing virtual hard disk to a virtual machine when you customize the virtual machine hardware during the virtual machine creation process or after the virtual machine is created. For example, you might want to add an existing hard disk that is preconfigured as a boot disk.

During virtual machine creation, a hard disk and a SCSI or SATA controller are added to the virtual machine by default, based on the guest operating system that you select. If this disk does not meet your needs, you can remove it and add an existing hard disk at the end of the creation process.



  1. Right-click a virtual machine in the inventory and select Edit Settings.
  2. (Optional) To delete the existing hard disk, move your cursor over the disk and click the Remove icon.
    The disk is removed from the virtual machine. If other virtual machines share the disk, the disk files are not deleted.
  3. On the Virtual Hardware tab, add an existing hard disk.
    Client Steps
    vSphere Client Click the Add New Device button and select Existing Hard Disk from the drop-down menu.
    vSphere Web Client
    1. Select Existing Hard Disk from the New device drop-down menu at the bottom of the wizard.
    2. Click Add.
    The Select File dialog box opens.
  4. In the Select File, expand a datastore, select a virtual machine folder, and select the disk to add. Click OK
    The disk file appears in the Contents column. The File Type drop-down menu shows the compatibility file types for this disk.
  5. (Optional) Expand New Hard disk and make further customizations for the hard disk. .
  6. Click OK.