On 2/4/2006 at 1:59 PM Fred Cisin wrote:
Moving the head to cylinder #306 ("parking the
head"),
and then moving it to cylinder 0 won't damage anything on my machines.
I've got a couple of 8" floppy drives where attempting to seek beyond
cylinder 77 will cause the heads to "bounce" back to cylinder 55 or so. I
don't think it hurts anything, but it is kind of neat to watch.
...and I've got a couple of 5.25" floppies where seeking to anything past
about cylinder 84/42 (depending on the drive) will cause the head to jam,
requiring manual intervention to free it.
I suppose that one could pound a hole through a ribbon or paper with an
impact printer printing over and over at the same spot. And line printers
with carriage control tapes where someone forgot to punch a hole could run
through a box of paper in no time on a "skip to channel" command. But
neither of those is anything more than an annoyance.
I'm still looking for that magical "self destruct sequence"...
Cheers,
Chuck