Modify the vmdk's contend seems not saved
1>mount the vmdk and modify it
tar myos.ova
vmware-mount -o rw /tmp/osroot.vmdk /mnt
touch /mnt/bin/aa
vmware-mount -X
2>re-mount it, but seems the aa isn't there anymore
vmware-mount -o rw /tmp/osroot.vmdk /mnt
ls /mnt/bin/aa