User`s guide

Principles of Working With Parallels Desktop 42
Memory Preferences
The Memory pane of Parallels Desktop Preferences allows you to adjust the maximum amount of
physical memory (RAM) that the system will reserve for all virtual machines running on your
physical computer.
Note: You must have the root privileges to change the memory settings of Parallels Desktop
in a Linux primary OS.
By default, the Automatically option is selected. In this case, the total amount of RAM to be
allocated to all running virtual machines is automatically calculated by the system based on the
following main factors:
 the total amount of memory installed on your physical computer and
 the amount of memory required by the primary operating system for its operation.
The allocated amount of memory is shared among all running virtual machines. You can
configure the amount of physical memory for a particular virtual machine on the Memory tab in
Virtual Machine Configuration (p. 104).
You can redefine the default behavior and
manually set the amount of memory to be reserved
for all active virtual machines. To this effect, select the Manually option and specify the needed
value by:
 dragging the slider, or
 using the spin box arrows, or
 typing the value directly into the field.
Restoring default settings
The Restore Defaults button enables you to restore the default settings for all options available in
this pane.