You can use an existing virtual disk for the virtual machine that you are creating. You can also customize the existing virtual disk.

1

On the Hard Disk page, click Use an Existing Virtual Disk to customize it.

2

On the Properties page, click Browse to locate an existing virtual disk.

3

To run the disk in independent mode, click Disk Mode, select Independent, and click the appropriate option.

Option

Action

Persistent

Disks in persistent mode behave like conventional disks on your physical computer. All data written to a disk in persistent mode is written permanently to the disk.

Nonpersistent

Changes to disks in nonpersistent mode are discarded when you power off or reset the virtual machine. Nonpersistent mode enables you to restart the virtual machine with a virtual disk in the same state every time. Changes to the disk are written to and read from a redo log file that is deleted when you power off or reset.

4

To specify the adapter type and a device node for the virtual disk, click Virtual Device Node.

a

In the Adapter drop-down menu, select the adapter type.

b

In the Device drop-down menu, select an available device node.

5

To change the write caching policies for the virtual disk, click Policies and select the appropriate option.

Option

Action

Optimize for safety

Saves all changes to the virtual disk before notifying the system.

Optimize for performance

Acknowledges changes to the virtual disk immediately, but saves them at a later time.

6

Click Next.