Built-in Administrator Account - Enable or Disable
Once logged in as the hidden administrator set the Ownership of the drive to your user name and let it propagate down the tree
Once this is complete go into the permissions and add full control for the administrators group and your user name. Give full control permissions for the everyone group to those folders that you wish to be available to all users.
The green text reference is confusing me, has there ever been any compression used on this drive?