
If you are not sure whether Parallels Tools are installed, you can easily check this.
How to check if Parallels Tools are installed To reinstall Parallels Tools, remove them first, and then install them again using the above procedure. When the installation is complete, click Restart to exit the assistant and restart you virtual machine.
In the Installation window, you can see the process of Parallels Tools being installed in your virtual machine. Click Install to continue the installation.
In the Standard Install on "Macintosh HD" window, if you need to set a different location for Parallels Tools, you can do it by clicking Change Install Location. In the Select a Destination window, specify the location for Parallels Tools. Open the mounted image of the disk and double-click the Guest OS Tools For Mac OS X icon to start the installation. To view the list of guest OSs which are supported by Parallels Tools, refer to Parallels Tools Availability. Note: If the Install Parallels Tools option is greyed out, make sure that Parallels Tools support your guest operating system. When the guest OS boots up, connect and mount the Parallels Tools ISO image file by choosing the Install Parallels Tools option from the Virtual Machine menu. Start the virtual machine, and log in to the guest OS. Note: You can create virtual machines with Mac OS X guest operating systems only on Intel-based Macs. To install Parallels Tools in Mac OS X guest OS: Installing Parallels Tools in a Mac OS X Guest OS