I'm a n00b and trying to learn from the many posts here. Several times I have run across mention of a "disk detainer." I assume it is some sort of lock, but it isn't in the glossary of terms here.
My search led me to believe that it may be an advanced topic, but I am hoping to learn something of what one is, perhaps some basic info of how to recognize one. I understand that it may not be possible to go into detail with the mechanics, but my curiosity has been aroused.
Sorry if this has been covered, but I didn't find it.