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Error "Operation could not be completed" with problem ID:41601 while changing virtual machine hard disk

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


Error Operation could not be completed with problem ID:41601 while trying to compress the hard disk.


This occurs in imported Boot Camp virtual machines with remaining GPT partitions.


In order to compress the imported virtual hard drive you need to remove GPT partitions. This is the way the imported hard drive looks right after migration:

(In order to see your partitions - right click My Computer > Manage)

In order to remove partitions please use diskpart utility which can be started through the Command Prompt:

  1. Make a full backup of the virtual machine.
  2. Press CMD+R > Type cmd and press Return/Enter.
  3. List all partitions:

    DISKPART> list disk

    The output should be similar to:

    Disk ### Status Size Free Dyn Gpt
    -------- ------------- ------- ------- --- ---
    Disk 0 Online 298 GB 128 MB`
  4. In order to remove partition - select disk:

    DISKPART> select disk 0

    The output should be similar to:

    Disk 0 is now the selected disk.
  5. List all partitions:

    DISKPART> list partition

    The output should be similar to:

    Partition ### Type Size Offset
    ------------- ---------------- ------- -------
    Partition 1 Primary 200 MB 512 B
    Partition 2 Primary 266 GB 200 MB
    Partition 3 Primary 31 GB 266 GB
  6. Select partition to remove:

    DISKPART> select partition 1

    The output should be similar to:

    Partition 1 is now the selected partition.
  7. Delete the selected partition:

    DISKPART> delete partition

    The output should be similar to:

    DiskPart successfully deleted the selected partition.
  8. Repeat for all partitions which you wish to remove.

  9. Exit Diskpart:

    DISKPART> exit

NOTE: Windows XP moves partitions as you remove them, e.g. Partition #2 becomes Partition #1 if you remove Partition #1 before that. Ensure you are selecting the exact partition you wish to remove before executing the delete option. After You have removed all GPT partitions, change the boot partition number in Boot.ini file which executed the system boot at Windows startup. Go to C:\Boot.ini (hidden) file and change the partition number (e.g. in the example above - change partition number from 3 to 1):


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