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I already have Windows installed in the VM. How can I make more space available on the VM hard disk without losing data on it?

  • Parallels Desktop 3 for Mac
  • Parallels Desktop 2.x for Mac


You can expand your virtual hard disk and create a new partition on the added space. Please follow these steps:
  1. Open Macintosh HD - Applications - Parallels - ImageTool.
  2. After Parallels Image Tool starts, click Next.
  3. Select Hard Disk as the device type.
  4. Select the Increase the size of the Virtual Hard Disk option and click Next.
  5. Click Browse to select the virtual disk you want to expand.
  6. The path is defined in the Resources section of Configuration Editor.
  7. Specify the desired size in the New Size box. Click Next.
  8. Now, that the Image Tool is ready to perform the required operation, please verify the settings and click Start.
  9. This operation requires approximately 5 minutes. (The time depends on the amount of data already stored on your virtual hard disk).
  10. After the operation is complete, click the Exit button.
  11. Start your guest OS (Windows).
  12. Choose Run from the Start menu. Type diskmgmt.msc in the input field and press Return to open the Disk Management utility.
  13. Right-click (or Ctrl+Shift-click) the Unallocated Capacity bar and select the New Partition option. After that, click Next in the dialog box to continue.
  14. Select Primary Partition option and click Next.
  15. Specify the size of a new partition and click Next.
  16. Specify the drive letter and click Next.
  17. Select Format partition using the NTFS file system. Specify the volume name and click Next.
  18. Click Finish to start formatting.
  19. A New Volume will appear in the Disk Management window and in My Computer folder.

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