No. The RX01 and RX02 are dual 8" floppy drives. There is no need (or way) to lock the heads in those. Both are single head units, so there is no need fpr a shipping disk either (on dual head units, the heads can bang into each other if the drive is knocked about, but on a single head unit like an RX02 or RX02 it will bang into the felt pressure pad which does no damage at all). The ones to lock are the RL01 and RL02 (and all RKs, and...) These are 14" hard disk units. Actually, the RL positioner is pretty stiff. My experience is that if the drive is transported front panel upwards, the heads won't move. Of course it depends on how far you are moving it and over what sort of roads! You want to read _all_ the applicable manuals on Bitsavers. For the RL, at least the user guide and maintenance/technical manuals. It'll be in the same manuals (or at least how to mount them is, which is as useful :-)). FWIW, I took my first RL01s out of their little rack to move them and hadn't even seen the DEC manual. I found it dead easy. I do not know what all the fuss is about. I had to take several RL's out for a recent house move and it took me a few minutes total. I find them easier than RK05s in that you remove the screws, the drives stay put. You release the catches and slide the drive forward, it stays on the slides. Then you lift it off. With the RKs, you pull it of the sliders and it suddenly comes free and you and a friend suddenly get all the weight. -tony --Devin