Hi, I have a problem with my virtual machine
My virtual machine's allocated is 64GB
In realty it use 12GB, but virtual machine's folder is 33GB 
I read about SDelete.exe i try use it and now I have a folder of 64GB 
(luckily I have a backup of virtual machine)
So, how can do for delete that unused space?
I tryed to compact virtual machine but i get "On of parameters supplied is invalid"
I'm new in the world of wmware so help me step by step 
I Have only workstation 10 last upgrade
Thank you