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Cannot Change Boot Camp Imported Virtual Machine's Disk Size (in Parallels Desktop 9)

APPLIES TO:
  • Parallels Desktop 9 for Mac Standard Edition

Symptoms

  • I am not able to change virtual disk size (shrink/expand) of the imported from Boot Camp virtual machine.

  • I have a hard disk with GPT partition style.

NOTE: In order to find out whether your disk has GPT or MBR partition table, please go to Control Panel -> Administrative Tools -> Computer Management, and select Disk Management. Enter disk Properties -> Volumes -> the Partition style: entry will show as either Master Boot Record (MBR) or GUID Partition Table (GPT).

Cause

Virtual machine size is equivalent to the size of the whole drive that contains BootCamp and Mac partitions:

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However, the space that is not used by BootCamp partition is given to Mac partition. Windows recognize this partition as RAW partition:

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Resolution

  1. Make a backup copy of the virtual machine using What are backup options? part of this article.

  2. Launch the virtual machine -> go to Control Panel -> Administrative Tools -> Computer Management, and select Disk Management.

  3. Remove all the partitions of the Disk 0 except the 200MB "EFI System Partition" and BOOTCAMP C:\ (the C:\ partition can have a different name according your BootCamp configurations):

    • Right-click the partition > Delete Volume.... The result should be like this:

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  4. Now the unallocated space should be given to disk C:\. You can achieve this goal using third-party applications (e.g. Acronis Disk Director or EASEUS Partition Manager). You can download EASEUS Partition Manager Free Edition here.

    The further part of this article will describe how to give unallocated space to disk C:\ using EASEUS Partition Manager Free Edition.

  5. Download, install and run EASEUS Partition Manager Free Edition in the virtual machine.

  6. Select C: BOOTCAMP partition and click Resize/Move partition:

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  7. Expand partition C:\ and click OK:

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  8. Click Apply:

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  9. Agree with rebooting. Windows will be restarted automatically. Please proceed with the resizing:

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