I have two screenshots below.
The first is Disk Utility on a Mavericks VM -- notice that it has used 14.02 GB
The second is Finder from the host machine - notice the disk is 35GB
What is using the @~20GB space? How can I reclaim it? on an SSD drive this is quite expensive!
(Fusion -> VM -> Settings -> General - has no reclaimable space)
Image may be NSFW.
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