Discussion:
Hard drive connector
John Jason Jordan
2006-11-29 04:29:12 UTC
Permalink
As soon as I received my R3240 in June, 2005 I reformatted the hard
drive and put Linux on it. I tried several distros, but quickly settled
on Ubuntu Hoary amd-64. I am currently running Dapper amd-64. This
computer is my first foray into Linux and I am not a computer science
major, so consider that I am still pretty much a newbie.

During the first year or so I experienced occasional corruption of the
main partition. Luckily I was always able to recover unscathed with
fsck. Nevertheless, the continuous corruption was disturbing.
Eventually I came to blame the ext3 filesystem. Then, several months
ago, I decided to upgrade the 60 GB 4200 rpm hard drive that came in
the computer to an 80 GB 7200 rpm drive. I didn't really need the
space; I was just after speed. After the successful upgrade I continued
to experience corruption. At this point I became convinced that ext3
had a bug somewhere. After all, it happened on the original hard drive
and again on a brand new replacement drive. What else could it be?

So yesterday I whipped my R3240 out of my backpack at the university
and turned it on. The Compaq splash screen came up, but that was all.
No grub menu. Nothing. It just sat there. Of course, I had a
presentation due in four hours and it was all on this computer. Why do
these things always happen when you can't afford for them to happen? I
recall my father referring to this kind of situation as "the perversity
of inanimate matter."

In desperation I went to the university CompSci department where they
have a help desk for Linux users. The help desk person said "it appears
it is not finding your hard drive." Well, duh! That made sense. Why
didn't I figure that out?

Since I knew how to get at the hard drive compartment, we rummaged
around the help desk area and found a small phillips head screwdriver,
and then reseated the hard drive, whereupon grub came up and the
computer booted normally. (Whew!!!)

That was yesterday. Since then it has happened twice more. I now carry
a small screwdriver in my backpack. I note that the problem only occurs
after walking with the computer in my backpack, where it slaps against
my back with each step. The backpack is padded, but it is also full of
books and stuff. Evidently this is enough jostling to unseat the hard
drive.

I think I need a new something-or-another. Since it happened with the
original hard drive as well, I am supposing that the problem is in the
connector on the computer, not the connector on the hard drives. I have
the Maintenance and Service Guide, but it does not show exactly where
the connector goes or what its part number is.

So has anyone run into this problem before? Does anyone know if there
is a replacement connector available, or what its part number is? Or
where it connects? Or how to replace it? Or does anyone have any other
suggestions?
Mark Carlson
2006-11-29 16:39:45 UTC
Permalink
Post by John Jason Jordan
So has anyone run into this problem before? Does anyone know if there
is a replacement connector available, or what its part number is? Or
where it connects? Or how to replace it? Or does anyone have any other
suggestions?
I have not run into this before, myself. However, I have heard of
people in (low-end) datacenters who use superglue to keep the SATA
cables from disconnecting from the drives due to the high-vibration
environments. You may want to try putting your older, slower (less
likely to shake itself loose) drive back in and see if the problem
persists. If it does, then your connector is probably shot. If your
connector is bad, you might have to replace the motherboard to fix it
(unless you're handy with a soldering iron and can find the part on
digikey.)

If the problem is just that the drive is being unseated (and not still
in the connector but making a poor connection,) I'd go with the glue,
or some other method of securing the drive in place.

-Mark
John Jason Jordan
2006-12-01 03:40:22 UTC
Permalink
On Wed, 29 Nov 2006 09:39:45 -0700
Post by Mark Carlson
I have not run into this before, myself. However, I have heard of
people in (low-end) datacenters who use superglue to keep the SATA
cables from disconnecting from the drives due to the high-vibration
environments.
I'm not wild about the superglue idea. But I am trying a fix.

I removed the drive today and took a close look at things. It seems the
connector on the drive is not meshing fully with the connector in the
drive bay. The drive is about 5 mm back from where it should be.
Unfortunately, the mounting holes in the side of the drive holder are
not elliptical, so I can't slide the drive forward the 5 mm to where it
should be. I thought of getting a tiny file and making the holes
elliptical, but for now I decided against it. Instead, I just left the
screws out. I placed the drive in the proper position as far forward as
it will go, then put the cover over it and tightened down the cover
screws.

Another thing I noticed is that the drive does not go down fully into
the connector. It rests against the drive bay cover, but it would be
more snug in the connector if it had a shim between the drive and the
drive bay cover. So, before putting the drive bay cover on, I took
seven or eight small post-it notes, cut them down a bit, and placed
them on top of the drive before putting the cover back on. This will
force the drive connector to mesh more fully into the drive bay
connector.

Without the screws it might shift back and forth a bit. We'll see if
this fixes things. If it does shift and the shifting becomes a problem,
I'll figure out a way to make the holes elliptical so I can slide the
drive forward where it belongs and still use the screws.

Thanks to all for the suggestions.
JT Moree
2006-12-01 15:27:58 UTC
Permalink
Post by John Jason Jordan
Without the screws it might shift back and forth a bit. We'll see if
this fixes things. If it does shift and the shifting becomes a problem,
I'll figure out a way to make the holes elliptical so I can slide the
drive forward where it belongs and still use the screws.
can you put an insert at the end of the drive like you did with the cover?

- --
JT Morée
PC Xperience, Inc.

Jason A. Myers
2006-11-29 18:38:36 UTC
Permalink
Post by John Jason Jordan
So has anyone run into this problem before? Does anyone know if there
is a replacement connector available, or what its part number is? Or
where it connects? Or how to replace it? Or does anyone have any other
suggestions?
This exact same thing happened to me (with the stock hard drive), although by the time I took my
laptop to get serviced the damn thing was working again. I too often
carry my computer around in my padded backpack full of books. However,
since that one hiccup it has workd since.

Let us know if you find out a good solution!

Cheers,

Jason
Loading...