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Preparing for Compression

Before starting Parallels Compressor, perform the following steps:

  1. Back up your virtual machine by cloning it or by copying its hard disk files to a safe location.

    This will allow you to restore your virtual machine in case you do not like the results of the compression.

    Warning: The result of virtual machine compression is irreversible.

  2. Check the hard disk for errors by running the chkdsk.exe utility.

Check if the virtual machine whose hard disk you are going to compress meets the following requirements:

Other types of virtual hard disks can be successfully compressed with Parallels Compressor.

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