HFS is not currently running. I must say that it makes little or no sense at all that you make files invisible here. Just put files you don’t want to see in a folder entitled “Invisible Folder” or “Contains Clutter...” and pretend not to see them.
The current disk is locked. Please unlock it. Either it is locked physically (the write protect tab is set to the locked position) or there is a locking flag set on the volume.
