Curtis H. Wilbar Jr.
rescue at hawkmountain.net
Thu Dec 7 23:00:28 CST 2006
Seth J. Morabito wrote:
> On Thu, Dec 07, 2006 at 07:20:05PM +0000, Adrian Graham wrote:
>> On 6/12/06 22:27, "Gordon JC Pearce" <gordon at gjcp.net> wrote:
>>>> Indeed, it looks like the original boot drive (also an RD53) long gave up
>>>> the ghost, which is a shame because it had RT11 5.4 and one of the systems I
>>>> wrote in the 1980's......
>>> What actually fails in them?
>> Head actuator I think; it powers up and spins up, doesn't sound headcrashed
>> but I can't hear or feel the heads move.....
> Definitely check for stiction, it's a very common problem on RD53s. If
> the data on them is worth saving, you can probably make a clean enough
> environment in your home or office to open up the drive assembly and
> nudge the head loose from the sticky rubber that it's parked against.
> You can probably get at least one good read out of it without it
> crashing (I know folks who've opened up their RD53s, reassembled them,
> and run them successfully for months afterward. YMMV!)
gah... I should have read beyond 'check for stiction'... the sticktion
is what I laid out in option 2... oops... its late... shouldn't be
so I didn't read beyond the the first line before commenting... doh !
The one drive I fixed it wasn't sticking to it (physically)... but the
holding the heads against it hard electrically (felt stuck with drive
think it holds hard against this looking for track 0... then fine ajusts
for track 0
center.... if that bumper changes geometry with age, or gets moved over
then it can't get a read on track 0.... hence why adjusting it by a
an inch in my case got the drive working nicely....
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