Hard Disk Settings
To view and configure the virtual hard disk settings, use the Hard Disk pane of Virtual Machine Configuration. Parallels Desktop allows virtual machines to use hard disk images in the
Note: You can connect up to 4 IDE devices (hard disks or CD/DVD drives), 6 SATA, and 15 SCSI devices to a virtual machine. Each device is listed separately in the Virtual Machine Configuration dialog and has its own number.
To edit the device settings, do the following:
Note: If this device is absent, you can add it to Virtual Machine Configuration. For detailed information on how to add a device, refer to Adding and Removing Devices.
In the Source field, the virtual hard disk file (
In the Location field, you can specify the type of interface for connecting the device:
Note 1: The Mac OS X guest OS does not support the SCSI controller. In the latest Linux distributions (e.g. RHEL 5.3), the SCSI driver may be not installed. In this case, you should install this driver in your Linux guest OS to be able to use the SCSI controller.
Note 2: The SCSI 7:0 location is not available for selecting, since it is occupied by the SCSI controller itself.
Compressing the Disk
If you use an expanding virtual hard disk in your virtual machine, its image file size on the physical hard disk increases as you add new data to the virtual hard disk. When you delete some data from this virtual hard disk, free unused space appears on the disk, but the amount of space your virtual machine occupies on the hard disk of your Mac does not reduce. To free the unused space back to Mac, click the Compress button. The virtual hard disk will be compressed and the hard disk image file size will be decreased. As a result, there will be more free space on your Mac hard disk.
Editing the Disk
If you find that the capacity of your virtual machine hard disk does not fit your needs anymore, you can change its size. Click the Edit button and the dialog for changing the disk size will appear.
Note: If your virtual machine is running, has snapshots, or uses a Boot Camp partition as a hard disk, its virtual hard disks cannot be resized.
To change the disk size, drag the slider or type the new size in the Size field. Select the Resize file system option if you want to change the file system size:
If the format of the virtual hard disk is expanding, you can convert it to plain by clearing the Expanding disk option.
If you want the virtual hard disk to be split, select the Split the disk image into 2 GB files option option.
Note: For more information about virtual hard disk types, please refer to Support for Virtual and Real Disks.
If you want to prevent Virtual Machine Configuration from unauthorized changes, click the Lock icon at the bottom of the window. The next time someone wants to change the settings in any pane of Virtual Machine Configuration, an administrator's password will be required.