Available article translations:

Сannot resize partition in Mac Os X guest

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


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.



After the virtual disk resizing, the guest macOS will treat the disk as a larger one, so the overall disk capacity will be increased. Now you need to do the following:

1. Open Disk Utility in macOS VM (Finder -> Applications -> Utilities -> Disk Utility)

2. Select Macintosh HD and click Partition

3. When asked whether to add a Volume or partition device click Partition

4. Click Macintosh HD partition, enter new desired partition size and click Apply

Now the disk size is correct in the guest macOS

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