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Virtual machine virtual disk grows very huge over time despite the fact that the guest os is not taking the space shown by the vmware virtual disk files. This examples shows how to reclaim unused space using command line tools like vmware-mount and vmware-vdiskmanager. The size of the virtual machine partitions, output of ls from the guest os   The total used space is only 10gb or so The size of the virtual disk files on the host To list the partition on a virtual partition use vmware-mount -p ex: vmware-mount -p /u02/vm/vm_test_for_prod_handson/vm_test_for_prod_handson.vmdk Partition has to be mounted to prepare it for shrinking, create a folder to mount the virtual machine partition mkdir /tmp/vm Mount the virtual disk partition vmware-mount /u02/vm/vm_test_for_prod_handson/vm_test_for_prod_handson.vmdk 1 /tmp/vm (This will mount the first partition) Now start pre