You can change virtual hard disk node and mode settings.

To change the node and mode settings for a virtual hard disk on a selected virtual machine, select VM > Settings, click the Hardware tab, select the virtual hard disk, and click Advanced. By default, changes are immediately written to the disk. The data on the disk is saved when you take a snapshot of the virtual machine.

Table 1. Virtual Hard Disk Node and Mode Settings



Virtual device node

Select the SCSI, IDE, or SATA device identifier to use for the drive. For example, if you select SCSI 0:2, the guest operating system detects the drive as ID 2 on controller 0. You determine whether the virtual disk is seen as a SCSI, IDE, or SATA device at the time that you create it.


For independent disks, records data on the disk when you take a snapshot of the virtual machine. If the Independent check box is unavailable, the virtual machine might have snapshots. After you delete the snapshots, the check box becomes available.

You can further specify whether changes that you make to the disk should persist or be discarded when you power off or restore a snapshot.