Available article translations:

Сannot resize partition in Mac Os X guest

  • Parallels Desktop for Mac Business Edition
  • Parallels Desktop
  • Parallels Desktop for Mac Pro Edition

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:

KB 113840


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:

How to add the second hard disk to an existing Virtual Machine

One can also use some available 3-rd party tools to increase existing guest Mac Os X partition. For more information please refer to:

Non-Destructively Resize an Existing Drive with CoreStorage

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