I have three 9121 disk drives. Two of them seat disks just fine. But the third has some sort of physical block that will not let my disks be inserted.
I have determined that what is happening is that the metal cover is not being moved out of the way (opened). But my problem is that I can't even see any mechanism for opening it.
I have posted the description and provided some photos, in hopes that someone who is familar with these drives might be able to see what is wrong.
Thanks