- Shut down your virtual machine (from Mac top menu choose Actions > Shut Down)
- Open virtual machine's configuration window > Hardware > CPU & Memory
Set the required amount of RAM by entering a number manually or moving the slider:
NOTE: We highly recommend to keep the slider within the recommended range. Assigning more RAM than recommended may cause severe performance degradation of both Mac and virtual machine.
- Close the configuration window and feel free to start your virtual machine.
To learn more and virtual RAM management in Parallels virtual machines please visit KB 122705.
In case you also need to add more hard disk space to the virtual machine, use this KB 113972