Automatic import from KB #112119
I am able to resize my Mac OS X virtual machine hard drive but there are no reflecting changes to my guest Mac Os partition.
One can still extend a virtual hard disk size, however guest Mac OS X (Mac OS X virtual machine) partition size will remain the same.
This option isn't available as a current feature set (since Parallels Desktop does not support resizing of HFS+ systems)
Please learn about supported guest filesystems in Parallels Desktop:
You can add a second virtual hard drive file to your existing Mac Os X virtual machine. This will add an additional space to your guest Mac OS X. In order to add a second drive please follow steps from our following knowledge base article:
One can also use some available 3-rd party tools to increase existing guest Mac Os X partition. For more information please refer to: