10 Dec
2006
10 Dec
'06
10:36 a.m.
On Dec 10, 2006, at 10:36 AM, dwight elvey wrote:
I find this hard to believe. If any of the lub leaked onto the
surface, it would surely cause the head to crash one spin
up. On the 225 I had, it always worked fine after a smack
on the side. Anything like steaks of lub from the bearing
would have destroyed the disk in no time.
I'd have thought that too, but that's what the bulletin said so I
believed it at the time. I don't know what the flying heights were
in those old drives but I'm sure they were nowhere near as low as
modern drives.
But you mentioned "225"...As in Seagate ST-225? I've never heard
of stiction problems with those (I have used quite a few of them, and
I currently have a few in DEC machines as RD-31s)...I wasn't aware
that they could develop such problems. I will keep an eye on mine!
-Dave
--
Dave McGuire
Cape Coral, FL
I've read several replies indicating that the
drive needs to be
taken apart.
People have also advocated just "hitting" the drive to break the
stiction.
Holding the drive and giving it a quick twist around the spindle
axis has always
worked for me and avoids potential problems with disassembly or
damage.
Has anyone seen stiction on the IDE or later drives? The only
stiction I've seen
has always been on the 5 1/4" MFM/RLL type drives, and probably
ESDI/SCSI/SASI
as well although my experience is limited on those drives.
Something else I've noticed is that if a drive has stiction,
that stiction will
return after the drive sets for a while again. Anyone know what
actually causes
stiction?
The story I heard "back in the day" (which was at work, from a
service bulletin of some sort, so I treat it with some
credibility) is that designers chose the spindle lubricant
unwisely in some models of drives, and it spun out onto the
platters a bit and gummed up.