It's really not too difficult to fix your own hard drive, if the problem is a
head crash, or the infamous Seagate "stiction" problem, if you know what to do.
You will require #4/0 steel wool, Varsol, WD-40, a few hand tools, and about 45
minutes.
First, you need a clean room, so make sure the garage door is closed before you
begin. Move those old lawnmower parts off the bench.
Disassemble the sealed unit and carefully wash all parts with Varsol. Bend the
read/write heads out of the way and then disassemble the platter stack.
VERY CAREFULLY buff the platter surfaces with the #4/0 steel wool.
This will remove any existing data, level out any surface defects, and help to
redistribute the magnetic media and fill in those pesky "bad sectors" that most
drives have.
Reassemble the platter stack, and using a .015" feeler gauge, bend the
read/write head back to the platter surface, using the feeler gauge to set the
gap. This is a slightly higher gap than the factory uses, but it reduces the
chance of head collisions with any flotsam you neglected to remove.
Give the head and platters a good shot of WD-40 and reassemble the unit. If
your drive has a filter, replace it with a clean section of gauze pad.
All that's left is to low level and DOS format the drive, and you're back in
business.
I haven't tried this yet myself, but my friend's wife's sister-in-law's husband
knows a technician who does it all the time.
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